cc: Remove legacy accelerated painting path

cc/output/delegating_renderer.cc

 // 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.
 
 #include "cc/output/delegating_renderer.h"
 
 #include <set>
 #include <string>
 #include <vector>
 
@@ skipping 87 matching lines @@
     } else if (extensions[i] == "GL_OES_EGL_image_external") {
         has_egl_image = true;
     } else if (extensions[i] == "GL_CHROMIUM_map_image") {
       has_map_image = true;
     }
   }
 
   if (has_io_surface)
     DCHECK(has_arb_texture_rect);
 
-  capabilities_.using_accelerated_painting =
-      Settings().accelerate_painting &&
-      capabilities_.best_texture_format == GL_BGRA_EXT &&
-      has_read_bgra;
-
   // TODO(piman): loop visibility to GPU process?
   capabilities_.using_set_visibility = has_set_visibility;
 
   // TODO(danakj): Support GpuMemoryManager.
   capabilities_.using_gpu_memory_manager = false;
 
   capabilities_.using_egl_image = has_egl_image;
 
   capabilities_.using_map_image = has_map_image;
 
@@ skipping 63 matching lines @@
   if (!context3d)
     return false;
   return context3d->getGraphicsResetStatusARB() != GL_NO_ERROR;
 }
 
 void DelegatingRenderer::SetVisible(bool visible) {
   visible_ = visible;
 }
 
 }  // namespace cc