[cc] Rename all cc/ filenames to Chromium style

cc/CCScrollbarGeometryFixedThumb.h

 // 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.
 
-#ifndef CCScrollbarGeometryFixedThumb_h
-#define CCScrollbarGeometryFixedThumb_h
-
-#include "CCScrollbarGeometryStub.h"
-#include "IntSize.h"
-
-namespace cc {
-
-// This scrollbar geometry class behaves exactly like a normal geometry except
-// it always returns a fixed thumb length. This allows a page to zoom (changing
-// the total size of the scrollable area, changing the thumb length) while not
-// requiring the thumb resource to be repainted.
-class CCScrollbarGeometryFixedThumb : public CCScrollbarGeometryStub {
-public:
-    static PassOwnPtr<CCScrollbarGeometryFixedThumb> create(PassOwnPtr<WebKit::WebScrollbarThemeGeometry>);
-    virtual ~CCScrollbarGeometryFixedThumb();
-
-    // Update thumb length from scrollbar
-    void update(WebKit::WebScrollbar*);
-
-    // WebScrollbarThemeGeometry interface
-    virtual WebKit::WebScrollbarThemeGeometry* clone() const OVERRIDE;
-    virtual int thumbLength(WebKit::WebScrollbar*) OVERRIDE;
-    virtual int thumbPosition(WebKit::WebScrollbar*) OVERRIDE;
-    virtual void splitTrack(WebKit::WebScrollbar*, const WebKit::WebRect& track, WebKit::WebRect& startTrack, WebKit::WebRect& thumb, WebKit::WebRect& endTrack) OVERRIDE;
-
-private:
-    explicit CCScrollbarGeometryFixedThumb(PassOwnPtr<WebKit::WebScrollbarThemeGeometry>);
-
-    IntSize m_thumbSize;
-};
-
-}
-
-#endif
+// Temporary forwarding header
+#include "cc/scrollbar_geometry_fixed_thumb.h"