[cc] Rename all cc/ filenames to Chromium style

cc/heads_up_display_layer.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 HeadsUpDisplayLayerChromium_h
+#define HeadsUpDisplayLayerChromium_h
+
+#include "base/memory/scoped_ptr.h"
+#include "CCFontAtlas.h"
+#include "IntSize.h"
+#include "LayerChromium.h"
+
+namespace cc {
+
+class HeadsUpDisplayLayerChromium : public LayerChromium {
+public:
+    static scoped_refptr<HeadsUpDisplayLayerChromium> create();
+
+    virtual void update(CCTextureUpdateQueue&, const CCOcclusionTracker*, CCRenderingStats&) OVERRIDE;
+    virtual bool drawsContent() const OVERRIDE;
+
+    void setFontAtlas(scoped_ptr<CCFontAtlas>);
+
+    virtual scoped_ptr<CCLayerImpl> createCCLayerImpl() OVERRIDE;
+    virtual void pushPropertiesTo(CCLayerImpl*) OVERRIDE;
+
+protected:
+    HeadsUpDisplayLayerChromium();
+
+private:
+    virtual ~HeadsUpDisplayLayerChromium();
+
+    scoped_ptr<CCFontAtlas> m_fontAtlas;
+};
+
+}  // namespace cc
+
+#endif