Remove parts of //cc we aren't using

cc/layers/append_quads_data.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 CC_LAYERS_APPEND_QUADS_DATA_H_
-#define CC_LAYERS_APPEND_QUADS_DATA_H_
-
-#include "base/basictypes.h"
-#include "cc/quads/render_pass_id.h"
-
-namespace cc {
-
-struct AppendQuadsData {
-  AppendQuadsData()
-      : num_incomplete_tiles(0),
-        num_missing_tiles(0),
-        visible_content_area(0),
-        approximated_visible_content_area(0) {}
-
-  // Set by the layer appending quads.
-  int64 num_incomplete_tiles;
-  // Set by the layer appending quads.
-  int64 num_missing_tiles;
-  // Set by the layer appending quads.
-  int64 visible_content_area;
-  // Set by the layer appending quads.
-  int64 approximated_visible_content_area;
-};
-
-}  // namespace cc
-#endif  // CC_LAYERS_APPEND_QUADS_DATA_H_