cc: Remove legacy accelerated painting path

cc/trees/layer_tree_host.h

 // 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_TREES_LAYER_TREE_HOST_H_
 #define CC_TREES_LAYER_TREE_HOST_H_
 
 #include <limits>
 #include <vector>
 
@@ skipping 55 matching lines @@
 struct ScrollAndScaleSet;
 
 // Provides information on an Impl's rendering capabilities back to the
 // LayerTreeHost.
 struct CC_EXPORT RendererCapabilities {
   RendererCapabilities();
   ~RendererCapabilities();
 
   unsigned best_texture_format;
   bool using_partial_swap;
-  bool using_accelerated_painting;
   bool using_set_visibility;
   bool using_swap_complete_callback;
   bool using_gpu_memory_manager;
   bool using_egl_image;
   bool allow_partial_texture_updates;
   bool using_offscreen_context3d;
   int max_texture_size;
   bool avoid_pow2_textures;
   bool using_map_image;
 };
 
 class CC_EXPORT LayerTreeHost : NON_EXPORTED_BASE(public RateLimiterClient) {
  public:
   static scoped_ptr<LayerTreeHost> Create(LayerTreeHostClient* client,
                                           const LayerTreeSettings& settings,
                                           scoped_ptr<Thread> impl_thread);
   virtual ~LayerTreeHost();
 
   void SetLayerTreeHostClientReady();
 
   // Returns true if any LayerTreeHost is alive.
   static bool AnyLayerTreeHostInstanceExists();
 
   void set_needs_filter_context() { needs_filter_context_ = true; }
   bool needs_offscreen_context() const {
-    return needs_filter_context_ || settings_.accelerate_painting;
+    return needs_filter_context_;
   }
 
   // LayerTreeHost interface to Proxy.
   void WillBeginFrame() { client_->WillBeginFrame(); }
   void DidBeginFrame();
   void UpdateClientAnimations(base::TimeTicks monotonic_frame_begin_time);
   void AnimateLayers(base::TimeTicks monotonic_frame_begin_time);
   void DidStopFlinging();
   void Layout();
   void BeginCommitOnImplThread(LayerTreeHostImpl* host_impl);
@@ skipping 251 matching lines @@
     int64 total_num_cc_layers_will_use_lcd_text;
   };
   LCDTextMetrics lcd_text_metrics_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerTreeHost);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_LAYER_TREE_HOST_H_