Move RenderLayerCompositor trigger caching to be when settings change

Source/core/page/Page.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All Rights Reserved.
  * Copyright (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 496 matching lines @@
         }
         break;
     case SettingsDelegate::ScriptEnableChange:
         m_inspectorController->scriptsEnabled(settings().scriptEnabled());
         break;
     case SettingsDelegate::FontFamilyChange:
         for (LocalFrame* frame = mainFrame(); frame; frame = frame->tree().traverseNext())
             frame->document()->styleEngine()->updateGenericFontFamilySettings();
         setNeedsRecalcStyleInAllFrames();
         break;
+    case SettingsDelegate::AcceleratedCompositingChange:
+        for (LocalFrame* frame = mainFrame(); frame; frame = frame->tree().traverseNext()) {
+            if (FrameView* view = frame->view())
+                view->updateAcceleratedCompositingSettings();
+        }
     }
 }
 
 void Page::didCommitLoad(LocalFrame* frame)
 {
     lifecycleNotifier().notifyDidCommitLoad(frame);
     if (m_mainFrame == frame) {
         useCounter().didCommitLoad();
         m_inspectorController->didCommitLoadForMainFrame();
     }
@@ skipping 19 matching lines @@
     , spellCheckerClient(0)
     , storageClient(0)
 {
 }
 
 Page::PageClients::~PageClients()
 {
 }
 
 } // namespace WebCore