Page::chrome() should return a reference.

Source/core/rendering/RenderLayerCompositor.cpp

 /*
  * Copyright (C) 2009, 2010 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 244 matching lines @@
     bool showRepaintCounter = false;
     bool forceCompositingMode = false;
 
     if (Settings* settings = m_renderView->document()->settings()) {
         hasAcceleratedCompositing = settings->acceleratedCompositingEnabled();
 
         // We allow the chrome to override the settings, in case the page is rendered
         // on a chrome that doesn't allow accelerated compositing.
         if (hasAcceleratedCompositing) {
             if (Page* page = this->page()) {
-                ChromeClient* chromeClient = page->chrome()->client();
+                ChromeClient* chromeClient = page->chrome().client();
                 m_compositingTriggers = chromeClient->allowedCompositingTriggers();
                 hasAcceleratedCompositing = m_compositingTriggers;
             }
         }
 
         showDebugBorders = settings->showDebugBorders();
         showRepaintCounter = settings->showRepaintCounter();
         forceCompositingMode = settings->forceCompositingMode() && hasAcceleratedCompositing;
 
         if (forceCompositingMode && !isMainFrame())
@@ skipping 38 matching lines @@
     if (!rootLayer)
         return;
 
     FrameView* frameView = m_renderView ? m_renderView->frameView() : 0;
     if (!frameView)
         return;
 
     IntRect visibleRect = m_clipLayer ? IntRect(IntPoint(), frameView->contentsSize()) : frameView->visibleContentRect();
     if (rootLayer->visibleRectChangeRequiresFlush(visibleRect)) {
         if (Page* page = this->page())
-            page->chrome()->client()->scheduleCompositingLayerFlush();
+            page->chrome().client()->scheduleCompositingLayerFlush();
     }
 }
 
 bool RenderLayerCompositor::hasAnyAdditionalCompositedLayers(const RenderLayer* rootLayer) const
 {
     return m_compositedLayerCount > (rootLayer->isComposited() ? 1 : 0);
 }
 
 void RenderLayerCompositor::updateCompositingLayers(CompositingUpdateType updateType, RenderLayer* updateRoot)
 {
@@ skipping 2129 matching lines @@
     switch (attachment) {
         case RootLayerUnattached:
             ASSERT_NOT_REACHED();
             break;
         case RootLayerAttachedViaChromeClient: {
             Frame* frame = m_renderView->frameView()->frame();
             Page* page = frame ? frame->page() : 0;
             if (!page)
                 return;
 
-            page->chrome()->client()->attachRootGraphicsLayer(frame, rootGraphicsLayer());
+            page->chrome().client()->attachRootGraphicsLayer(frame, rootGraphicsLayer());
             break;
         }
         case RootLayerAttachedViaEnclosingFrame: {
             // The layer will get hooked up via RenderLayerBacking::updateGraphicsLayerConfiguration()
             // for the frame's renderer in the parent document.
             m_renderView->document()->ownerElement()->scheduleSyntheticStyleChange();
             break;
         }
     }
 
@@ skipping 18 matching lines @@
         if (HTMLFrameOwnerElement* ownerElement = m_renderView->document()->ownerElement())
             ownerElement->scheduleSyntheticStyleChange();
         break;
     }
     case RootLayerAttachedViaChromeClient: {
         Frame* frame = m_renderView->frameView()->frame();
         Page* page = frame ? frame->page() : 0;
         if (!page)
             return;
 
-        page->chrome()->client()->attachRootGraphicsLayer(frame, 0);
+        page->chrome().client()->attachRootGraphicsLayer(frame, 0);
     }
     break;
     case RootLayerUnattached:
         break;
     }
 
     m_rootLayerAttachment = RootLayerUnattached;
     rootLayerAttachmentChanged();
 }
 
@@ skipping 183 matching lines @@
 {
     if (Page* page = this->page())
         return page->scrollingCoordinator();
 
     return 0;
 }
 
 GraphicsLayerFactory* RenderLayerCompositor::graphicsLayerFactory() const
 {
     if (Page* page = this->page())
-        return page->chrome()->client()->graphicsLayerFactory();
+        return page->chrome().client()->graphicsLayerFactory();
 
     return 0;
 }
 
 Page* RenderLayerCompositor::page() const
 {
     if (Frame* frame = m_renderView->frameView()->frame())
         return frame->page();
     
     return 0;
@@ skipping 13 matching lines @@
     info.addMember(m_layerForScrollCorner, "layerForScrollCorner");
 #if ENABLE(RUBBER_BANDING)
     info.addMember(m_layerForOverhangAreas, "layerForOverhangAreas");
     info.addMember(m_contentShadowLayer, "contentShadowLayer");
     info.addMember(m_layerForTopOverhangArea, "layerForTopOverhangArea");
     info.addMember(m_layerForBottomOverhangArea, "layerForBottomOverhangArea");
 #endif
 }
 
 } // namespace WebCore