[cc] Rename all cc/ filenames to Chromium style

cc/graphics_context.h

Index: cc/graphics_context.h
diff --git a/cc/graphics_context.h b/cc/graphics_context.h
index 638cbb270ce9b24689d5095baf174ade4f4d1a13..6eb5b3407cbd0704c7cc268b083932a64dea68d0 100644
--- a/cc/graphics_context.h
+++ b/cc/graphics_context.h
@@ -1,3 +1,18 @@
 // 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 CCGraphicsContext_h
+#define CCGraphicsContext_h
+
+#include <public/WebCompositorOutputSurface.h>
+#include <public/WebGraphicsContext3D.h>
+
+namespace cc {
+
+// FIXME: rename fully to CCOutputSurface.
+typedef WebKit::WebCompositorOutputSurface CCGraphicsContext;
+
+}  // namespace cc
+
+#endif  // CCGraphicsContext_h