Remove parts of //cc we aren't using

cc/debug/layer_tree_debug_state.h

Index: cc/debug/layer_tree_debug_state.h
diff --git a/cc/debug/layer_tree_debug_state.h b/cc/debug/layer_tree_debug_state.h
deleted file mode 100644
index 4b71cd9bbbe44267c0b013b089d4af86d78644fe..0000000000000000000000000000000000000000
--- a/cc/debug/layer_tree_debug_state.h
+++ /dev/null
@@ -1,54 +0,0 @@
-// Copyright 2011 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_DEBUG_LAYER_TREE_DEBUG_STATE_H_
-#define CC_DEBUG_LAYER_TREE_DEBUG_STATE_H_
-
-#include "base/basictypes.h"
-#include "cc/base/cc_export.h"
-
-namespace cc {
-
-class CC_EXPORT LayerTreeDebugState {
- public:
-  LayerTreeDebugState();
-  ~LayerTreeDebugState();
-
-  bool show_fps_counter;
-  bool show_debug_borders;
-  bool continuous_painting;
-
-  bool show_paint_rects;
-  bool show_property_changed_rects;
-  bool show_surface_damage_rects;
-  bool show_screen_space_rects;
-  bool show_replica_screen_space_rects;
-  bool show_touch_event_handler_rects;
-  bool show_wheel_event_handler_rects;
-  bool show_scroll_event_handler_rects;
-  bool show_non_fast_scrollable_rects;
-  bool show_layer_animation_bounds_rects;
-
-  int slow_down_raster_scale_factor;
-  bool rasterize_only_visible_content;
-  bool show_picture_borders;
-
-  void SetRecordRenderingStats(bool enabled);
-  bool RecordRenderingStats() const;
-
-  bool ShowHudInfo() const;
-  bool ShowHudRects() const;
-  bool ShowMemoryStats() const;
-
-  static bool Equal(const LayerTreeDebugState& a, const LayerTreeDebugState& b);
-  static LayerTreeDebugState Unite(const LayerTreeDebugState& a,
-                                   const LayerTreeDebugState& b);
-
- private:
-  bool record_rendering_stats_;
-};
-
-}  // namespace cc
-
-#endif  // CC_DEBUG_LAYER_TREE_DEBUG_STATE_H_