[cc] Rename all cc/ filenames to Chromium style

cc/ContentLayerChromiumClient.h

Index: cc/ContentLayerChromiumClient.h
diff --git a/cc/ContentLayerChromiumClient.h b/cc/ContentLayerChromiumClient.h
index 54a92673def9aa5aca4d744691a2e15a215a5e7f..2bfb52a80eaf0ba669e03cb4bab44c3b15d9ab90 100644
--- a/cc/ContentLayerChromiumClient.h
+++ b/cc/ContentLayerChromiumClient.h
@@ -2,23 +2,5 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef ContentLayerChromiumClient_h
-#define ContentLayerChromiumClient_h
-
-class SkCanvas;
-
-namespace cc {
-class FloatRect;
-class IntRect;
-
-class ContentLayerChromiumClient {
-public:
-    virtual void paintContents(SkCanvas*, const IntRect& clip, FloatRect& opaque) = 0;
-
-protected:
-    virtual ~ContentLayerChromiumClient() { }
-};
-
-}
-
-#endif // ContentLayerChromiumClient_h
+// Temporary forwarding header
+#include "cc/content_layer_client.h"