Cache gpu suitability in DisplayItemList, remove SetUnsuitable...ForTesting

cc/playback/display_list_recording_source.h

 // Copyright 2014 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_PLAYBACK_DISPLAY_LIST_RECORDING_SOURCE_H_
 #define CC_PLAYBACK_DISPLAY_LIST_RECORDING_SOURCE_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "cc/playback/recording_source.h"
 
@@ skipping 15 matching lines @@
                                    RecordingMode recording_mode) override;
   scoped_refptr<RasterSource> CreateRasterSource(
       bool can_use_lcd_text) const override;
   gfx::Size GetSize() const final;
   void SetEmptyBounds() override;
   void SetSlowdownRasterScaleFactor(int factor) override;
   void SetGatherDiscardableImages(bool gather_images) override;
   void SetBackgroundColor(SkColor background_color) override;
   void SetRequiresClear(bool requires_clear) override;
   bool IsSuitableForGpuRasterization() const override;
-  void SetUnsuitableForGpuRasterizationForTesting() override;
   // Returns true if the new recorded viewport exposes enough new area to be
   // worth re-recording.
   static bool ExposesEnoughNewArea(
       const gfx::Rect& current_recorded_viewport,
       const gfx::Rect& potential_new_recorded_viewport,
       const gfx::Size& layer_size);
 
   gfx::Rect recorded_viewport() const { return recorded_viewport_; }
 
  protected:
@@ skipping 20 matching lines @@
   void DetermineIfSolidColor();
 
   bool is_suitable_for_gpu_rasterization_;
 
   DISALLOW_COPY_AND_ASSIGN(DisplayListRecordingSource);
 };
 
 }  // namespace cc
 
 #endif  // CC_PLAYBACK_DISPLAY_LIST_RECORDING_SOURCE_H_