Issue #1653 - Part 1: Remove WinUtils::SHGetKnownFolderPath

Instead of doing the whole dll-load, replace function dance, we can just use the
shlobj.h version of Windows.

4 files changed, 5 insertions, 47 deletions

diff --git a/dom/plugins/ipc/PluginModuleChild.cpp b/dom/plugins/ipc/PluginModuleChild.cpp
index f943dfc427..98c9cd4949 100644
--- a/dom/plugins/ipc/PluginModuleChild.cpp
+++ b/dom/plugins/ipc/PluginModuleChild.cpp
@@ -40,8 +40,8 @@
 #ifdef XP_WIN
 #include "nsWindowsDllInterceptor.h"
 #include "mozilla/widget/AudioSession.h"
-#include "WinUtils.h"
 #include <knownfolders.h>
+#include <shlobj.h>
 #endif
 
 #ifdef MOZ_WIDGET_COCOA
@@ -1918,8 +1918,8 @@ GetLocalLowTempPath(size_t aLen, LPWSTR aPath)
 {
     NS_NAMED_LITERAL_STRING(tempname, "\\Temp");
     LPWSTR path;
-    if (SUCCEEDED(WinUtils::SHGetKnownFolderPath(FOLDERID_LocalAppDataLow, 0,
-                                                 nullptr, &path))) {
+    if (SUCCEEDED(SHGetKnownFolderPath(FOLDERID_LocalAppDataLow, 0,
+                                       nullptr, &path))) {
         if (wcslen(path) + tempname.Length() < aLen) {
             wcscpy(aPath, path);
             wcscat(aPath, tempname.get());
diff --git a/widget/windows/WinIMEHandler.cpp b/widget/windows/WinIMEHandler.cpp
index 9debaa2dda..f411cdd509 100644
--- a/widget/windows/WinIMEHandler.cpp
+++ b/widget/windows/WinIMEHandler.cpp
@@ -961,8 +961,8 @@ IMEHandler::ShowOnScreenKeyboard()
       } else {
         PWSTR path = nullptr;
         HRESULT hres =
-          WinUtils::SHGetKnownFolderPath(FOLDERID_ProgramFilesCommon, 0,
-                                         nullptr, &path);
+          SHGetKnownFolderPath(FOLDERID_ProgramFilesCommon, 0,
+                               nullptr, &path);
         if (FAILED(hres) || !path) {
           return;
         }
diff --git a/widget/windows/WinUtils.cpp b/widget/windows/WinUtils.cpp
index bd42e78f66..6d9aab50db 100644
--- a/widget/windows/WinUtils.cpp
+++ b/widget/windows/WinUtils.cpp
@@ -419,8 +419,6 @@ const char FaviconHelper::kShortcutCacheDir[] = "shortcutCache";
 
 // apis available on vista and up.
 WinUtils::SHCreateItemFromParsingNamePtr WinUtils::sCreateItemFromParsingName = nullptr;
-WinUtils::SHGetKnownFolderPathPtr WinUtils::sGetKnownFolderPath = nullptr;
-
 // We just leak these DLL HMODULEs. There's no point in calling FreeLibrary
 // on them during shutdown anyway.
 static const wchar_t kShellLibraryName[] =  L"shell32.dll";
@@ -1179,32 +1177,6 @@ WinUtils::SHCreateItemFromParsingName(PCWSTR pszPath, IBindCtx *pbc,
   return sCreateItemFromParsingName(pszPath, pbc, riid, ppv);
 }
 
-/* static */
-HRESULT 
-WinUtils::SHGetKnownFolderPath(REFKNOWNFOLDERID rfid,
-                               DWORD dwFlags,
-                               HANDLE hToken,
-                               PWSTR *ppszPath)
-{
-  if (sGetKnownFolderPath) {
-    return sGetKnownFolderPath(rfid, dwFlags, hToken, ppszPath);
-  }
-
-  if (!sShellDll) {
-    sShellDll = ::LoadLibraryW(kShellLibraryName);
-    if (!sShellDll) {
-      return false;
-    }
-  }
-
-  sGetKnownFolderPath = (SHGetKnownFolderPathPtr)
-    GetProcAddress(sShellDll, "SHGetKnownFolderPath");
-  if (!sGetKnownFolderPath)
-    return E_FAIL;
-
-  return sGetKnownFolderPath(rfid, dwFlags, hToken, ppszPath);
-}
-
 static BOOL
 WINAPI EnumFirstChild(HWND hwnd, LPARAM lParam)
 {
diff --git a/widget/windows/WinUtils.h b/widget/windows/WinUtils.h
index 37469ce079..9aa2c1c8ad 100644
--- a/widget/windows/WinUtils.h
+++ b/widget/windows/WinUtils.h
@@ -399,14 +399,6 @@ public:
                                              REFIID riid, void **ppv);
 
   /**
-   * SHGetKnownFolderPath() calls native SHGetKnownFolderPath()
-   * API which is available on Vista and up.
-   */
-  static HRESULT SHGetKnownFolderPath(REFKNOWNFOLDERID rfid,
-                                      DWORD dwFlags,
-                                      HANDLE hToken,
-                                      PWSTR *ppszPath);
-  /**
    * GetShellItemPath return the file or directory path of a shell item.
    * Internally calls IShellItem's GetDisplayName.
    *
@@ -529,12 +521,6 @@ private:
                                                             REFIID riid,
                                                             void **ppv);
   static SHCreateItemFromParsingNamePtr sCreateItemFromParsingName;
-  typedef HRESULT (WINAPI * SHGetKnownFolderPathPtr)(REFKNOWNFOLDERID rfid,
-                                                     DWORD dwFlags,
-                                                     HANDLE hToken,
-                                                     PWSTR *ppszPath);
-  static SHGetKnownFolderPathPtr sGetKnownFolderPath;
-
   static void GetWhitelistedPaths(
       nsTArray<mozilla::Pair<nsString,nsDependentString>>& aOutput);
 };