1 files changed, 14 insertions, 0 deletions
diff --git a/layout/base/nsPresContext.cpp b/layout/base/nsPresContext.cpp
index 8f3de7f78d..f7be42b5ff 100644
--- a/layout/base/nsPresContext.cpp
+++ b/layout/base/nsPresContext.cpp
@@ -2895,9 +2895,15 @@ nsRootPresContext::ComputePluginGeometryUpdates(nsIFrame* aFrame,
     aList->ComputeVisibilityForRoot(aBuilder, &region);
   }
 
+#ifdef XP_MACOSX
+  // We control painting of Mac plugins, so just apply geometry updates now.
+  // This is not happening during a paint event.
+  ApplyPluginGeometryUpdates();
+#else
   if (XRE_IsParentProcess()) {
     InitApplyPluginGeometryTimer();
   }
+#endif
 }
 
 static void
@@ -2933,6 +2939,8 @@ nsRootPresContext::CancelApplyPluginGeometryTimer()
   }
 }
 
+#ifndef XP_MACOSX
+
 static bool
 HasOverlap(const LayoutDeviceIntPoint& aOffset1,
            const nsTArray<LayoutDeviceIntRect>& aClipRects1,
@@ -3017,6 +3025,8 @@ PluginGetGeometryUpdate(nsTHashtable<nsRefPtrHashKey<nsIContent>>& aPlugins,
   }
 }
 
+#endif  // #ifndef XP_MACOSX
+
 static void
 PluginDidSetGeometry(nsTHashtable<nsRefPtrHashKey<nsIContent>>& aPlugins)
 {
@@ -3033,6 +3043,7 @@ PluginDidSetGeometry(nsTHashtable<nsRefPtrHashKey<nsIContent>>& aPlugins)
 void
 nsRootPresContext::ApplyPluginGeometryUpdates()
 {
+#ifndef XP_MACOSX
   CancelApplyPluginGeometryTimer();
 
   nsTArray<nsIWidget::Configuration> configurations;
@@ -3044,6 +3055,7 @@ nsRootPresContext::ApplyPluginGeometryUpdates()
     SortConfigurations(&configurations);
     widget->ConfigureChildren(configurations);
   }
+#endif  // #ifndef XP_MACOSX
 
   PluginDidSetGeometry(mRegisteredPlugins);
 }
@@ -3051,6 +3063,7 @@ nsRootPresContext::ApplyPluginGeometryUpdates()
 void
 nsRootPresContext::CollectPluginGeometryUpdates(LayerManager* aLayerManager)
 {
+#ifndef XP_MACOSX
   // Collect and pass plugin widget configurations down to the compositor
   // for transmission to the chrome process.
   NS_ASSERTION(aLayerManager, "layer manager is invalid!");
@@ -3073,6 +3086,7 @@ nsRootPresContext::CollectPluginGeometryUpdates(LayerManager* aLayerManager)
     clm->StorePluginWidgetConfigurations(configurations);
   }
   PluginDidSetGeometry(mRegisteredPlugins);
+#endif  // #ifndef XP_MACOSX
 }
 
 static void