Chrome::client() should return a ChromeClient reference.

Source/core/inspector/InspectorOverlay.cpp

 /*
  * Copyright (C) 2011 Google 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
@@ skipping 41 matching lines @@
 #include "core/rendering/RenderInline.h"
 #include "core/rendering/RenderObject.h"
 #include "wtf/text/StringBuilder.h"
 
 namespace WebCore {
 
 namespace {
 
 class InspectorOverlayChromeClient: public EmptyChromeClient {
 public:
-    InspectorOverlayChromeClient(ChromeClient* client, InspectorOverlay* overlay)
+    InspectorOverlayChromeClient(ChromeClient& client, InspectorOverlay* overlay)
         : m_client(client)
         , m_overlay(overlay)
     { }
 
     virtual void setCursor(const Cursor& cursor)
     {
-        m_client->setCursor(cursor);
+        m_client.setCursor(cursor);
     }
 
     virtual void setToolTip(const String& tooltip, TextDirection direction)
     {
-        m_client->setToolTip(tooltip, direction);
+        m_client.setToolTip(tooltip, direction);
     }
 
     virtual void invalidateRootView(const IntRect& rect)
     {
         m_overlay->invalidate();
     }
 
     virtual void invalidateContentsAndRootView(const IntRect& rect)
     {
         m_overlay->invalidate();
     }
 
     virtual void invalidateContentsForSlowScroll(const IntRect& rect)
     {
         m_overlay->invalidate();
     }
+
 private:
-    ChromeClient* m_client;
+    ChromeClient& m_client;
     InspectorOverlay* m_overlay;
 };
 
 Path quadToPath(const FloatQuad& quad)
 {
     Path quadPath;
     quadPath.moveTo(quad.p1());
     quadPath.addLineTo(quad.p2());
     quadPath.addLineTo(quad.p3());
     quadPath.addLineTo(quad.p4());
@@ skipping 566 matching lines @@
 
 void InspectorOverlay::freePage()
 {
     m_overlayPage.clear();
     m_overlayChromeClient.clear();
     m_timer.stop();
 }
 
 } // namespace WebCore