Remove parts of //cc we aren't using

cc/layers/heads_up_display_layer_impl.h

Index: cc/layers/heads_up_display_layer_impl.h
diff --git a/cc/layers/heads_up_display_layer_impl.h b/cc/layers/heads_up_display_layer_impl.h
deleted file mode 100644
index 750d9913ab37ee4eae9ee09e3821db684b791515..0000000000000000000000000000000000000000
--- a/cc/layers/heads_up_display_layer_impl.h
+++ /dev/null
@@ -1,150 +0,0 @@
-// 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_HEADS_UP_DISPLAY_LAYER_IMPL_H_
-#define CC_LAYERS_HEADS_UP_DISPLAY_LAYER_IMPL_H_
-
-#include <string>
-#include <vector>
-
-#include "base/memory/scoped_ptr.h"
-#include "base/time/time.h"
-#include "cc/base/cc_export.h"
-#include "cc/debug/debug_rect_history.h"
-#include "cc/layers/layer_impl.h"
-#include "cc/resources/memory_history.h"
-#include "cc/resources/scoped_resource.h"
-
-class SkCanvas;
-class SkPaint;
-class SkTypeface;
-struct SkRect;
-
-namespace cc {
-
-class FrameRateCounter;
-class PaintTimeCounter;
-
-class CC_EXPORT HeadsUpDisplayLayerImpl : public LayerImpl {
- public:
-  static scoped_ptr<HeadsUpDisplayLayerImpl> Create(LayerTreeImpl* tree_impl,
-                                                    int id) {
-    return make_scoped_ptr(new HeadsUpDisplayLayerImpl(tree_impl, id));
-  }
-  ~HeadsUpDisplayLayerImpl() override;
-
-  scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl) override;
-
-  bool WillDraw(DrawMode draw_mode,
-                ResourceProvider* resource_provider) override;
-  void AppendQuads(RenderPass* render_pass,
-                   AppendQuadsData* append_quads_data) override;
-  void UpdateHudTexture(DrawMode draw_mode,
-                        ResourceProvider* resource_provider);
-
-  void ReleaseResources() override;
-
-  gfx::Rect GetEnclosingRectInTargetSpace() const override;
-
-  bool IsAnimatingHUDContents() const { return fade_step_ > 0; }
-
- private:
-  class Graph {
-   public:
-    Graph(double indicator_value, double start_upper_bound);
-
-    // Eases the upper bound, which limits what is currently visible in the
-    // graph, so that the graph always scales to either it's max or
-    // default_upper_bound.
-    double UpdateUpperBound();
-
-    double value;
-    double min;
-    double max;
-
-    double current_upper_bound;
-    const double default_upper_bound;
-    const double indicator;
-  };
-
-  HeadsUpDisplayLayerImpl(LayerTreeImpl* tree_impl, int id);
-
-  const char* LayerTypeAsString() const override;
-
-  void AsValueInto(base::trace_event::TracedValue* dict) const override;
-
-  void UpdateHudContents();
-  void DrawHudContents(SkCanvas* canvas);
-
-  void DrawText(SkCanvas* canvas,
-                SkPaint* paint,
-                const std::string& text,
-                SkPaint::Align align,
-                int size,
-                int x,
-                int y) const;
-  void DrawText(SkCanvas* canvas,
-                SkPaint* paint,
-                const std::string& text,
-                SkPaint::Align align,
-                int size,
-                const SkPoint& pos) const;
-  void DrawGraphBackground(SkCanvas* canvas,
-                           SkPaint* paint,
-                           const SkRect& bounds) const;
-  void DrawGraphLines(SkCanvas* canvas,
-                      SkPaint* paint,
-                      const SkRect& bounds,
-                      const Graph& graph) const;
-
-  SkRect DrawFPSDisplay(SkCanvas* canvas,
-                        const FrameRateCounter* fps_counter,
-                        int right,
-                        int top) const;
-  SkRect DrawMemoryDisplay(SkCanvas* canvas,
-                           int top,
-                           int right,
-                           int width) const;
-  SkRect DrawGpuRasterizationStatus(SkCanvas* canvas,
-                                    int right,
-                                    int top,
-                                    int width) const;
-  SkRect DrawPaintTimeDisplay(SkCanvas* canvas,
-                              const PaintTimeCounter* paint_time_counter,
-                              int top,
-                              int right) const;
-  void DrawDebugRect(SkCanvas* canvas,
-                     SkPaint* paint,
-                     const DebugRect& rect,
-                     SkColor stroke_color,
-                     SkColor fill_color,
-                     float stroke_width,
-                     const std::string& label_text) const;
-  void DrawDebugRects(SkCanvas* canvas, DebugRectHistory* debug_rect_history);
-
-  void AcquireResource(ResourceProvider* resource_provider);
-  void ReleaseUnmatchedSizeResources(ResourceProvider* resource_provider);
-
-  ScopedPtrVector<ScopedResource> resources_;
-  skia::RefPtr<SkSurface> hud_surface_;
-
-  skia::RefPtr<SkTypeface> typeface_;
-
-  float internal_contents_scale_;
-  gfx::Size internal_content_bounds_;
-
-  Graph fps_graph_;
-  Graph paint_time_graph_;
-  MemoryHistory::Entry memory_entry_;
-  int fade_step_;
-  std::vector<DebugRect> paint_rects_;
-
-  base::TimeTicks time_of_last_graph_update_;
-
-  DISALLOW_COPY_AND_ASSIGN(HeadsUpDisplayLayerImpl);
-};
-
-}  // namespace cc
-
-#endif  // CC_LAYERS_HEADS_UP_DISPLAY_LAYER_IMPL_H_