Make scrollAnimatorEnabled work on Mac like it does on other platforms

content/browser/renderer_host/render_process_host_impl.cc

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Represents the browser side of the browser <--> renderer communication
 // channel. There will be one RenderProcessHost per renderer process.
 
 #include "content/browser/renderer_host/render_process_host_impl.h"
 
 #include <algorithm>
@@ skipping 2594 matching lines @@
 
 void RenderProcessHostImpl::OnCloseACK(int old_route_id) {
   SessionStorageHolder* holder =
       static_cast<SessionStorageHolder*>(GetUserData(kSessionStorageHolderKey));
   if (!holder)
     return;
   holder->Release(old_route_id);
 }
 
 void RenderProcessHostImpl::OnGpuSwitched() {
-  // We are updating all widgets including swapped out ones.
-  scoped_ptr<RenderWidgetHostIterator> widgets(
-      RenderWidgetHostImpl::GetAllRenderWidgetHosts());
-  while (RenderWidgetHost* widget = widgets->GetNextHost()) {
-    RenderViewHost* rvh = RenderViewHost::From(widget);
-    if (!rvh)
-      continue;
-
-    // Skip widgets in other processes.
-    if (rvh->GetProcess()->GetID() != GetID())
-      continue;
-
-    rvh->OnWebkitPreferencesChanged();
-  }
+  RecomputeAndUpdateWebKitPreferences();
 }
 
 #if defined(ENABLE_WEBRTC)
 void RenderProcessHostImpl::OnRegisterAecDumpConsumer(int id) {
   BrowserThread::PostTask(
       BrowserThread::UI, FROM_HERE,
       base::Bind(&RenderProcessHostImpl::RegisterAecDumpConsumerOnUIThread,
                  weak_factory_.GetWeakPtr(), id));
 }
 
@@ skipping 123 matching lines @@
 
 void RenderProcessHostImpl::GetAudioOutputControllers(
     const GetAudioOutputControllersCallback& callback) const {
   audio_renderer_host()->GetOutputControllers(callback);
 }
 
 BluetoothDispatcherHost* RenderProcessHostImpl::GetBluetoothDispatcherHost() {
   return bluetooth_dispatcher_host_.get();
 }
 
+void RenderProcessHostImpl::RecomputeAndUpdateWebKitPreferences() {
+  // We are updating all widgets including swapped out ones.
+  scoped_ptr<RenderWidgetHostIterator> widgets(
+      RenderWidgetHostImpl::GetAllRenderWidgetHosts());
+  while (RenderWidgetHost* widget = widgets->GetNextHost()) {
+    RenderViewHost* rvh = RenderViewHost::From(widget);
+    if (!rvh)
+      continue;
+
+    // Skip widgets in other processes.
+    if (rvh->GetProcess()->GetID() != GetID())
+      continue;
+
+    rvh->OnWebkitPreferencesChanged();
+  }
+}
+
 }  // namespace content