Issue #1822 - Part 3: Remove LOAD_CLASSIFIER_URI and various

helper functions.

23 files changed, 20 insertions, 169 deletions

diff --git a/accessible/base/Logging.cpp b/accessible/base/Logging.cpp
index 1fd5639702..dccd1761c6 100644
--- a/accessible/base/Logging.cpp
+++ b/accessible/base/Logging.cpp
@@ -341,8 +341,6 @@ LogRequest(nsIRequest* aRequest)
       printf("targeted; ");
     if (loadFlags & nsIChannel::LOAD_CALL_CONTENT_SNIFFERS)
       printf("call content sniffers; ");
-    if (loadFlags & nsIChannel::LOAD_CLASSIFY_URI)
-      printf("classify uri; ");
   } else {
     printf("    no request");
   }
diff --git a/docshell/base/nsDocShell.cpp b/docshell/base/nsDocShell.cpp
index c40fbd7a10..55f09d35b1 100644
--- a/docshell/base/nsDocShell.cpp
+++ b/docshell/base/nsDocShell.cpp
@@ -530,9 +530,8 @@ SendPing(void* aClosure, nsIContent* aContent, nsIURI* aURI,
     return;
   }
 
-  // Don't bother caching the result of this URI load, but do not exempt
-  // it from Safe Browsing.
-  chan->SetLoadFlags(nsIRequest::INHIBIT_CACHING | nsIChannel::LOAD_CLASSIFY_URI);
+  // Don't bother caching the result of this URI load.
+  chan->SetLoadFlags(nsIRequest::INHIBIT_CACHING);
 
   nsCOMPtr<nsIHttpChannel> httpChan = do_QueryInterface(chan);
   if (!httpChan) {
@@ -1560,10 +1559,6 @@ nsDocShell::LoadURI(nsIURI* aURI,
     flags |= INTERNAL_LOAD_FLAGS_FIRST_LOAD;
   }
 
-  if (aLoadFlags & LOAD_FLAGS_BYPASS_CLASSIFIER) {
-    flags |= INTERNAL_LOAD_FLAGS_BYPASS_CLASSIFIER;
-  }
-
   if (aLoadFlags & LOAD_FLAGS_FORCE_ALLOW_COOKIES) {
     flags |= INTERNAL_LOAD_FLAGS_FORCE_ALLOW_COOKIES;
   }
@@ -1662,7 +1657,7 @@ nsDocShell::LoadStream(nsIInputStream* aStream, nsIURI* aURI,
   nsCOMPtr<nsIURILoader> uriLoader(do_GetService(NS_URI_LOADER_CONTRACTID));
   NS_ENSURE_TRUE(uriLoader, NS_ERROR_FAILURE);
 
-  NS_ENSURE_SUCCESS(DoChannelLoad(channel, uriLoader, false),
+  NS_ENSURE_SUCCESS(DoChannelLoad(channel, uriLoader),
                     NS_ERROR_FAILURE);
   return NS_OK;
 }
@@ -4993,31 +4988,6 @@ nsDocShell::DisplayLoadError(nsresult aError, nsIURI* aURI,
         error.AssignLiteral("nssFailure2");
       }
     }
-  } else if (NS_ERROR_PHISHING_URI == aError ||
-             NS_ERROR_MALWARE_URI == aError ||
-             NS_ERROR_UNWANTED_URI == aError) {
-    nsAutoCString host;
-    aURI->GetHost(host);
-    CopyUTF8toUTF16(host, formatStrs[0]);
-    formatStrCount = 1;
-
-    // Malware and phishing detectors may want to use an alternate error
-    // page, but if the pref's not set, we'll fall back on the standard page
-    nsAdoptingCString alternateErrorPage =
-      Preferences::GetCString("urlclassifier.alternate_error_page");
-    if (alternateErrorPage) {
-      errorPage.Assign(alternateErrorPage);
-    }
-
-    if (NS_ERROR_PHISHING_URI == aError) {
-      error.AssignLiteral("deceptiveBlocked");
-    } else if (NS_ERROR_MALWARE_URI == aError) {
-      error.AssignLiteral("malwareBlocked");
-    } else if (NS_ERROR_UNWANTED_URI == aError) {
-      error.AssignLiteral("unwantedBlocked");
-    }
-
-    cssClass.AssignLiteral("blacklist");
   } else if (NS_ERROR_CONTENT_CRASHED == aError) {
     errorPage.AssignLiteral("tabcrashed");
     error.AssignLiteral("tabcrashed");
@@ -10668,7 +10638,6 @@ nsDocShell::InternalLoad(nsIURI* aURI,
                  aFileName, aPostData, aHeadersData,
                  aFirstParty, aDocShell, getter_AddRefs(req),
                  (aFlags & INTERNAL_LOAD_FLAGS_FIRST_LOAD) != 0,
-                 (aFlags & INTERNAL_LOAD_FLAGS_BYPASS_CLASSIFIER) != 0,
                  (aFlags & INTERNAL_LOAD_FLAGS_FORCE_ALLOW_COOKIES) != 0,
                  srcdoc, aBaseURI, contentType);
   if (req && aRequest) {
@@ -10757,7 +10726,6 @@ nsDocShell::DoURILoad(nsIURI* aURI,
                       nsIDocShell** aDocShell,
                       nsIRequest** aRequest,
                       bool aIsNewWindowTarget,
-                      bool aBypassClassifier,
                       bool aForceAllowCookies,
                       const nsAString& aSrcdoc,
                       nsIURI* aBaseURI,
@@ -11227,7 +11195,7 @@ nsDocShell::DoURILoad(nsIURI* aURI,
     }
   }
 
-  rv = DoChannelLoad(channel, uriLoader, aBypassClassifier);
+  rv = DoChannelLoad(channel, uriLoader);
 
   //
   // If the channel load failed, we failed and nsIWebProgress just ain't
@@ -11323,8 +11291,7 @@ nsDocShell::AddHeadersToChannel(nsIInputStream* aHeadersData,
 
 nsresult
 nsDocShell::DoChannelLoad(nsIChannel* aChannel,
-                          nsIURILoader* aURILoader,
-                          bool aBypassClassifier)
+                          nsIURILoader* aURILoader)
 {
   nsresult rv;
   // Mark the channel as being a document URI and allow content sniffing...
@@ -11394,10 +11361,6 @@ nsDocShell::DoChannelLoad(nsIChannel* aChannel,
       break;
   }
 
-  if (!aBypassClassifier) {
-    loadFlags |= nsIChannel::LOAD_CLASSIFY_URI;
-  }
-
   // If the user pressed shift-reload, then do not allow ServiceWorker
   // interception to occur. See step 12.1 of the SW HandleFetch algorithm.
   if (IsForceReloadType(mLoadType)) {
diff --git a/docshell/base/nsDocShell.h b/docshell/base/nsDocShell.h
index 019a7e4ab6..bc5c5eed3f 100644
--- a/docshell/base/nsDocShell.h
+++ b/docshell/base/nsDocShell.h
@@ -386,7 +386,6 @@ protected:
                      nsIDocShell** aDocShell,
                      nsIRequest** aRequest,
                      bool aIsNewWindowTarget,
-                     bool aBypassClassifier,
                      bool aForceAllowCookies,
                      const nsAString& aSrcdoc,
                      nsIURI* aBaseURI,
@@ -394,8 +393,7 @@ protected:
   nsresult AddHeadersToChannel(nsIInputStream* aHeadersData,
                                nsIChannel* aChannel);
   nsresult DoChannelLoad(nsIChannel* aChannel,
-                         nsIURILoader* aURILoader,
-                         bool aBypassClassifier);
+                         nsIURILoader* aURILoader);
 
   nsresult ScrollToAnchor(bool aCurHasRef,
                           bool aNewHasRef,
diff --git a/docshell/base/nsIDocShell.idl b/docshell/base/nsIDocShell.idl
index d2812bd9c9..0e3c4f1996 100644
--- a/docshell/base/nsIDocShell.idl
+++ b/docshell/base/nsIDocShell.idl
@@ -110,7 +110,8 @@ interface nsIDocShell : nsIDocShellTreeItem
   // @see nsIWebNavigation::LOAD_FLAGS_FIRST_LOAD
   const long INTERNAL_LOAD_FLAGS_FIRST_LOAD              = 0x8;
 
-  const long INTERNAL_LOAD_FLAGS_BYPASS_CLASSIFIER       = 0x10;
+  // 0x10 is unused
+  
   const long INTERNAL_LOAD_FLAGS_FORCE_ALLOW_COOKIES     = 0x20;
 
   // Whether the load should be treated as srcdoc load, rather than a URI one.
diff --git a/dom/base/Navigator.cpp b/dom/base/Navigator.cpp
index 0e4a406fee..4fd7405644 100644
--- a/dom/base/Navigator.cpp
+++ b/dom/base/Navigator.cpp
@@ -885,8 +885,7 @@ Navigator::SendBeacon(const nsAString& aUrl,
     return false;
   }
 
-  nsLoadFlags loadFlags = nsIRequest::LOAD_NORMAL |
-    nsIChannel::LOAD_CLASSIFY_URI;
+  nsLoadFlags loadFlags = nsIRequest::LOAD_NORMAL;
 
   // No need to use CORS for sendBeacon unless it's a BLOB
   nsSecurityFlags securityFlags = (!aData.IsNull() && aData.Value().IsBlob())
diff --git a/dom/base/nsObjectLoadingContent.cpp b/dom/base/nsObjectLoadingContent.cpp
index 27e4e7b7e9..525ece9296 100644
--- a/dom/base/nsObjectLoadingContent.cpp
+++ b/dom/base/nsObjectLoadingContent.cpp
@@ -2660,7 +2660,6 @@ nsObjectLoadingContent::OpenChannel()
                      group, // aLoadGroup
                      shim,  // aCallbacks
                      nsIChannel::LOAD_CALL_CONTENT_SNIFFERS |
-                     nsIChannel::LOAD_CLASSIFY_URI |
                      nsIChannel::LOAD_BYPASS_SERVICE_WORKER);
   NS_ENSURE_SUCCESS(rv, rv);
   if (inherit) {
diff --git a/dom/fetch/FetchDriver.cpp b/dom/fetch/FetchDriver.cpp
index 79bd5a0e39..e755edeb3b 100644
--- a/dom/fetch/FetchDriver.cpp
+++ b/dom/fetch/FetchDriver.cpp
@@ -210,8 +210,7 @@ FetchDriver::HttpFetch()
   MOZ_ASSERT(mLoadGroup);
   nsCOMPtr<nsIChannel> chan;
 
-  nsLoadFlags loadFlags = nsIRequest::LOAD_NORMAL |
-    bypassFlag | nsIChannel::LOAD_CLASSIFY_URI;
+  nsLoadFlags loadFlags = nsIRequest::LOAD_NORMAL | bypassFlag;
   if (mDocument) {
     MOZ_ASSERT(mDocument->NodePrincipal() == mPrincipal);
     rv = NS_NewChannel(getter_AddRefs(chan),
diff --git a/dom/html/HTMLMediaElement.cpp b/dom/html/HTMLMediaElement.cpp
index a483198655..21f62b0e32 100644
--- a/dom/html/HTMLMediaElement.cpp
+++ b/dom/html/HTMLMediaElement.cpp
@@ -664,7 +664,6 @@ public:
                                 nullptr,   // aCallbacks
                                 nsICachingChannel::LOAD_BYPASS_LOCAL_CACHE_IF_BUSY |
                                 nsIChannel::LOAD_MEDIA_SNIFFER_OVERRIDES_CONTENT_TYPE |
-                                nsIChannel::LOAD_CLASSIFY_URI |
                                 nsIChannel::LOAD_CALL_CONTENT_SNIFFERS);
 
     if (NS_FAILED(rv)) {
diff --git a/dom/html/HTMLTrackElement.cpp b/dom/html/HTMLTrackElement.cpp
index 07fbe2073d..9799a2d156 100644
--- a/dom/html/HTMLTrackElement.cpp
+++ b/dom/html/HTMLTrackElement.cpp
@@ -326,7 +326,7 @@ HTMLTrackElement::LoadResource()
                      nsIContentPolicy::TYPE_INTERNAL_TRACK,
                      loadGroup,
                      nullptr,   // aCallbacks
-                     nsIRequest::LOAD_NORMAL | nsIChannel::LOAD_CLASSIFY_URI);
+                     nsIRequest::LOAD_NORMAL);
 
   NS_ENSURE_TRUE_VOID(NS_SUCCEEDED(rv));
 
diff --git a/dom/jsurl/nsJSProtocolHandler.cpp b/dom/jsurl/nsJSProtocolHandler.cpp
index 7602e58b0b..82d24d1334 100644
--- a/dom/jsurl/nsJSProtocolHandler.cpp
+++ b/dom/jsurl/nsJSProtocolHandler.cpp
@@ -837,11 +837,6 @@ nsJSChannel::SetLoadFlags(nsLoadFlags aLoadFlags)
         bogusLoadBackground = !loadGroupIsBackground;
     }
 
-    // Classifying a javascript: URI doesn't help us, and requires
-    // NSS to boot, which we don't have in content processes.  See
-    // https://bugzilla.mozilla.org/show_bug.cgi?id=617838.
-    aLoadFlags &= ~LOAD_CLASSIFY_URI;
-
     // Since the javascript channel is never the actual channel that
     // any data is loaded through, don't ever set the
     // LOAD_DOCUMENT_URI flag on it, since that could lead to two
diff --git a/dom/media/MediaResource.cpp b/dom/media/MediaResource.cpp
index 84a8d67fd9..5271cfe4be 100644
--- a/dom/media/MediaResource.cpp
+++ b/dom/media/MediaResource.cpp
@@ -1,5 +1,4 @@
 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* vim:set ts=2 sw=2 sts=2 et cindent: */
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
@@ -799,7 +798,6 @@ ChannelMediaResource::RecreateChannel()
 {
   nsLoadFlags loadFlags =
     nsICachingChannel::LOAD_BYPASS_LOCAL_CACHE_IF_BUSY |
-    nsIChannel::LOAD_CLASSIFY_URI |
     (mLoadInBackground ? nsIRequest::LOAD_BACKGROUND : 0);
 
   MediaDecoderOwner* owner = mCallback->GetMediaOwner();
@@ -1350,7 +1348,7 @@ already_AddRefed<MediaResource> FileMediaResource::CloneData(MediaResourceCallba
   nsContentPolicyType contentPolicyType = element->IsHTMLElement(nsGkAtoms::audio) ?
     nsIContentPolicy::TYPE_INTERNAL_AUDIO : nsIContentPolicy::TYPE_INTERNAL_VIDEO;
 
-  nsLoadFlags loadFlags = nsIRequest::LOAD_NORMAL | nsIChannel::LOAD_CLASSIFY_URI;
+  nsLoadFlags loadFlags = nsIRequest::LOAD_NORMAL;
 
   nsCOMPtr<nsIChannel> channel;
   nsresult rv =
diff --git a/dom/plugins/base/nsPluginHost.cpp b/dom/plugins/base/nsPluginHost.cpp
index 482a201f8f..8a87f672e8 100644
--- a/dom/plugins/base/nsPluginHost.cpp
+++ b/dom/plugins/base/nsPluginHost.cpp
@@ -3204,7 +3204,7 @@ nsresult nsPluginHost::NewPluginURLStream(const nsString& aURL,
                      nsIContentPolicy::TYPE_OBJECT_SUBREQUEST,
                      nullptr,  // aLoadGroup
                      listenerPeer,
-                     nsIRequest::LOAD_NORMAL | nsIChannel::LOAD_CLASSIFY_URI |
+                     nsIRequest::LOAD_NORMAL |
                      nsIChannel::LOAD_BYPASS_SERVICE_WORKER);
   NS_ENSURE_SUCCESS(rv, rv);
 
diff --git a/dom/script/ScriptLoader.cpp b/dom/script/ScriptLoader.cpp
index 5b7bea8d22..3e1c13af5c 100644
--- a/dom/script/ScriptLoader.cpp
+++ b/dom/script/ScriptLoader.cpp
@@ -1046,8 +1046,7 @@ ScriptLoader::StartLoad(ScriptLoadRequest *aRequest, const nsAString &aType,
                               contentPolicyType,
                               loadGroup,
                               prompter,
-                              nsIRequest::LOAD_NORMAL |
-                              nsIChannel::LOAD_CLASSIFY_URI);
+                              nsIRequest::LOAD_NORMAL);
 
   NS_ENSURE_SUCCESS(rv, rv);
 
diff --git a/dom/security/nsCSPContext.cpp b/dom/security/nsCSPContext.cpp
index a553680feb..ec698b91d0 100644
--- a/dom/security/nsCSPContext.cpp
+++ b/dom/security/nsCSPContext.cpp
@@ -925,7 +925,7 @@ nsCSPContext::SendReports(nsISupports* aBlockedContentSource,
     }
 
     // try to create a new channel for every report-uri
-    nsLoadFlags loadFlags = nsIRequest::LOAD_NORMAL | nsIChannel::LOAD_CLASSIFY_URI;
+    nsLoadFlags loadFlags = nsIRequest::LOAD_NORMAL;
     if (doc) {
       rv = NS_NewChannel(getter_AddRefs(reportChannel),
                          reportURI,
diff --git a/dom/workers/ScriptLoader.cpp b/dom/workers/ScriptLoader.cpp
index 35d5ba6271..56381a0c8d 100644
--- a/dom/workers/ScriptLoader.cpp
+++ b/dom/workers/ScriptLoader.cpp
@@ -142,7 +142,6 @@ ChannelFromScriptURL(nsIPrincipal* principal,
     parentDoc = nullptr;
   }
 
-  aLoadFlags |= nsIChannel::LOAD_CLASSIFY_URI;
   uint32_t secFlags = aIsMainScript ? nsILoadInfo::SEC_REQUIRE_SAME_ORIGIN_DATA_IS_BLOCKED
                                     : nsILoadInfo::SEC_ALLOW_CROSS_ORIGIN_DATA_INHERITS;
 
diff --git a/dom/xhr/XMLHttpRequestMainThread.cpp b/dom/xhr/XMLHttpRequestMainThread.cpp
index 8a1c1f0ada..c96f59ab6d 100644
--- a/dom/xhr/XMLHttpRequestMainThread.cpp
+++ b/dom/xhr/XMLHttpRequestMainThread.cpp
@@ -2479,8 +2479,7 @@ XMLHttpRequestMainThread::CreateChannel()
   nsCOMPtr<nsILoadGroup> loadGroup = GetLoadGroup();
 
   nsSecurityFlags secFlags;
-  nsLoadFlags loadFlags = nsIRequest::LOAD_BACKGROUND |
-                          nsIChannel::LOAD_CLASSIFY_URI;
+  nsLoadFlags loadFlags = nsIRequest::LOAD_BACKGROUND;
   if (nsContentUtils::IsSystemPrincipal(mPrincipal)) {
     // When chrome is loading we want to make sure to sandbox any potential
     // result document. We also want to allow cross-origin loads.
diff --git a/image/imgLoader.cpp b/image/imgLoader.cpp
index 0f516bc800..3b64f065bd 100644
--- a/image/imgLoader.cpp
+++ b/image/imgLoader.cpp
@@ -699,8 +699,6 @@ NewImageChannel(nsIChannel** aResult,
   // (possibly in different documents).
   // If all of the proxy requests are canceled then this request should be
   // canceled too.
-  //
-  aLoadFlags |= nsIChannel::LOAD_CLASSIFY_URI;
 
   nsCOMPtr<nsINode> requestingNode = do_QueryInterface(aRequestingContext);
 
diff --git a/layout/style/Loader.cpp b/layout/style/Loader.cpp
index a28a1053f0..e3a49b3b6a 100644
--- a/layout/style/Loader.cpp
+++ b/layout/style/Loader.cpp
@@ -1,5 +1,4 @@
 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
- * vim: ft=cpp tw=78 sw=2 et ts=2
  *
  * This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
@@ -1631,8 +1630,7 @@ Loader::LoadSheet(SheetLoadData* aLoadData,
                                               contentPolicyType,
                                               loadGroup,
                                               nullptr,   // aCallbacks
-                                              nsIChannel::LOAD_NORMAL |
-                                              nsIChannel::LOAD_CLASSIFY_URI);
+                                              nsIChannel::LOAD_NORMAL);
   }
   else {
     // either we are loading something inside a document, in which case
@@ -1646,8 +1644,7 @@ Loader::LoadSheet(SheetLoadData* aLoadData,
                        contentPolicyType,
                        loadGroup,
                        nullptr,   // aCallbacks
-                       nsIChannel::LOAD_NORMAL |
-                       nsIChannel::LOAD_CLASSIFY_URI);
+                       nsIChannel::LOAD_NORMAL);
   }
 
   if (NS_FAILED(rv)) {
diff --git a/netwerk/base/nsBaseChannel.cpp b/netwerk/base/nsBaseChannel.cpp
index 85181c50bd..a4d8d0d42f 100644
--- a/netwerk/base/nsBaseChannel.cpp
+++ b/netwerk/base/nsBaseChannel.cpp
@@ -304,25 +304,6 @@ nsBaseChannel::ContinueHandleAsyncRedirect(nsresult result)
   CallbacksChanged();
 }
 
-void
-nsBaseChannel::ClassifyURI()
-{
-  // For channels created in the child process, delegate to the parent to
-  // classify URIs.
-  if (!XRE_IsParentProcess()) {
-    return;
-  }
-
-  if (mLoadFlags & LOAD_CLASSIFY_URI) {
-    RefPtr<nsChannelClassifier> classifier = new nsChannelClassifier();
-    if (classifier) {
-      classifier->Start(this);
-    } else {
-      Cancel(NS_ERROR_OUT_OF_MEMORY);
-    }
-  }
-}
-
 //-----------------------------------------------------------------------------
 // nsBaseChannel::nsISupports
 
@@ -627,7 +608,6 @@ nsBaseChannel::Open(nsIInputStream **result)
 
   if (NS_SUCCEEDED(rv)) {
     mWasOpened = true;
-    ClassifyURI();
   }
 
   return rv;
@@ -698,8 +678,6 @@ nsBaseChannel::AsyncOpen(nsIStreamListener *listener, nsISupports *ctxt)
   if (mLoadGroup)
     mLoadGroup->AddRequest(this, nullptr);
 
-  ClassifyURI();
-
   return NS_OK;
 }
 
diff --git a/netwerk/base/nsBaseChannel.h b/netwerk/base/nsBaseChannel.h
index b98609e857..390a492f9b 100644
--- a/netwerk/base/nsBaseChannel.h
+++ b/netwerk/base/nsBaseChannel.h
@@ -241,9 +241,6 @@ private:
   void ContinueHandleAsyncRedirect(nsresult result);
   nsresult ContinueRedirect();
 
-  // start URI classifier if requested
-  void ClassifyURI();
-
   class RedirectRunnable : public mozilla::Runnable
   {
   public:
diff --git a/netwerk/base/nsIChannel.idl b/netwerk/base/nsIChannel.idl
index 743e942920..b668c518d0 100644
--- a/netwerk/base/nsIChannel.idl
+++ b/netwerk/base/nsIChannel.idl
@@ -258,10 +258,8 @@ interface nsIChannel : nsIRequest
     const unsigned long LOAD_CALL_CONTENT_SNIFFERS = 1 << 21;
 
     /**
-     * This flag tells the channel to use URI classifier service to check
-     * the URI when opening the channel.
+     * Bit 22 is unused.
      */
-    const unsigned long LOAD_CLASSIFY_URI = 1 << 22;
 
     /**
      * If this flag is set, the media-type content sniffer will be allowed
diff --git a/netwerk/protocol/http/nsHttpChannel.cpp b/netwerk/protocol/http/nsHttpChannel.cpp
index 3ba812b923..16d31a8fc9 100644
--- a/netwerk/protocol/http/nsHttpChannel.cpp
+++ b/netwerk/protocol/http/nsHttpChannel.cpp
@@ -5842,37 +5842,6 @@ nsHttpChannel::BeginConnectContinue()
     if (mAPIRedirectToURI) {
         return AsyncCall(&nsHttpChannel::HandleAsyncAPIRedirect);
     }
-    // Check to see if this principal exists on local blocklists.
-    RefPtr<nsChannelClassifier> channelClassifier = new nsChannelClassifier();
-    if (mLoadFlags & LOAD_CLASSIFY_URI) {
-        nsCOMPtr<nsIURIClassifier> classifier = do_GetService(NS_URICLASSIFIERSERVICE_CONTRACTID);
-        bool tpEnabled = false;
-        channelClassifier->ShouldEnableTrackingProtection(this, &tpEnabled);
-        if (classifier && tpEnabled) {
-            // We skip speculative connections by setting mLocalBlocklist only
-            // when tracking protection is enabled. Though we could do this for
-            // both phishing and malware, it is not necessary for correctness,
-            // since no network events will be received while the
-            // nsChannelClassifier is in progress. See bug 1122691.
-            nsCOMPtr<nsIURI> uri;
-            rv = GetURI(getter_AddRefs(uri));
-            if (NS_SUCCEEDED(rv) && uri) {
-                nsAutoCString tables;
-                Preferences::GetCString("urlclassifier.trackingTable", &tables);
-                nsAutoCString results;
-                rv = classifier->ClassifyLocalWithTables(uri, tables, results);
-                if (NS_SUCCEEDED(rv) && !results.IsEmpty()) {
-                    LOG(("nsHttpChannel::ClassifyLocalWithTables found "
-                         "uri on local tracking blocklist [this=%p]",
-                         this));
-                    mLocalBlocklist = true;
-                } else {
-                    LOG(("nsHttpChannel::ClassifyLocalWithTables no result "
-                         "found [this=%p]", this));
-                }
-            }
-        }
-    }
 
     // If mTimingEnabled flag is not set after OnModifyRequest() then
     // clear the already recorded AsyncOpen value for consistency.
@@ -5945,36 +5914,7 @@ nsHttpChannel::BeginConnectContinue()
         return mStatus;
     }
 
-    if (!(mLoadFlags & LOAD_CLASSIFY_URI)) {
-        return ContinueBeginConnectWithResult();
-    }
-
-    // mLocalBlocklist is true only if tracking protection is enabled and the
-    // URI is a tracking domain, it makes no guarantees about phishing or
-    // malware, so if LOAD_CLASSIFY_URI is true we must call
-    // nsChannelClassifier to catch phishing and malware URIs.
-    bool callContinueBeginConnect = true;
-    if (!mLocalBlocklist) {
-        // Here we call ContinueBeginConnectWithResult and not
-        // ContinueBeginConnect so that in the case of an error we do not start
-        // channelClassifier.
-        rv = ContinueBeginConnectWithResult();
-        if (NS_FAILED(rv)) {
-            return rv;
-        }
-        callContinueBeginConnect = false;
-    }
-    // nsChannelClassifier calls ContinueBeginConnect if it has not already
-    // been called, after optionally cancelling the channel once we have a
-    // remote verdict. We call a concrete class instead of an nsI* that might
-    // be overridden.
-    LOG(("nsHttpChannel::Starting nsChannelClassifier %p [this=%p]",
-         channelClassifier.get(), this));
-    channelClassifier->Start(this);
-    if (callContinueBeginConnect) {
-        return ContinueBeginConnectWithResult();
-    }
-    return NS_OK;
+    return ContinueBeginConnectWithResult();
 }
 
 NS_IMETHODIMP
diff --git a/toolkit/components/telemetry/TelemetrySend.jsm b/toolkit/components/telemetry/TelemetrySend.jsm
index 4694ac6a96..21282cc085 100644
--- a/toolkit/components/telemetry/TelemetrySend.jsm
+++ b/toolkit/components/telemetry/TelemetrySend.jsm
@@ -916,9 +916,6 @@ var TelemetrySendImpl = {
 
     this._pendingPingRequests.set(id, request);
 
-    // Prevent the request channel from running though URLClassifier (bug 1296802)
-    request.channel.loadFlags &= ~Ci.nsIChannel.LOAD_CLASSIFY_URI;
-
     const monotonicStartTime = monotonicNow();
     let deferred = PromiseUtils.defer();