cc: Adding support for RGBA_4444 tile textures

cc/trees/layer_tree_host.cc

 // 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.
 
 #include "cc/trees/layer_tree_host.h"
 
 #include <algorithm>
 #include <stack>
 
 #include "base/bind.h"
@@ skipping 873 matching lines @@
   size_t contents_texture_bytes = 0;
 
   // Start iteration at 1 to skip the root surface as it does not have a texture
   // cost.
   for (size_t i = 1; i < update_list.size(); ++i) {
     Layer* render_surface_layer = update_list.at(i);
     RenderSurface* render_surface = render_surface_layer->render_surface();
 
     size_t bytes =
         Resource::MemorySizeBytes(render_surface->content_rect().size(),
-                                  GL_RGBA);
+                                  GL_RGBA,
+                                  false);
     contents_texture_bytes += bytes;
 
     if (render_surface_layer->background_filters().IsEmpty())
       continue;
 
     if (bytes > max_background_texture_bytes)
       max_background_texture_bytes = bytes;
     if (!readback_bytes) {
       readback_bytes = Resource::MemorySizeBytes(device_viewport_size_,
-                                                 GL_RGBA);
+                                                 GL_RGBA,
+                                                 false);
     }
   }
   return readback_bytes + max_background_texture_bytes + contents_texture_bytes;
 }
 
 void LayerTreeHost::PaintMasksForRenderSurface(Layer* render_surface_layer,
                                                ResourceUpdateQueue* queue,
                                                bool* did_paint_content,
                                                bool* need_more_updates) {
   // Note: Masks and replicas only exist for layers that own render surfaces. If
@@ skipping 252 matching lines @@
 void LayerTreeHost::DidLoseUIResources() {
   // When output surface is lost, we need to recreate the resource.
   for (UIResourceClientMap::iterator iter = ui_resource_client_map_.begin();
        iter != ui_resource_client_map_.end();
        ++iter) {
     UIResourceLost(iter->first);
   }
 }
 
 }  // namespace cc