cc: Support mask layers in impl-side painting

cc/layer_tree_impl.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/layer_tree_impl.h"
 
 #include "base/debug/trace_event.h"
 #include "cc/layer_tree_host_common.h"
 #include "cc/layer_tree_host_impl.h"
 #include "ui/gfx/vector2d_conversions.h"
@@ skipping 108 matching lines @@
         layer_tree_host_impl_->implTransform());
   }
 
   {
     TRACE_EVENT0("cc", "LayerTreeImpl::UpdateDrawProperties");
     LayerTreeHostCommon::calculateDrawProperties(
         RootLayer(),
         device_viewport_size(),
         device_scale_factor(),
         pinch_zoom_viewport().pageScaleFactor(),
-        layer_tree_host_impl_->rendererCapabilities().maxTextureSize,
+        MaxTextureSize(),
         settings().canUseLCDText,
         render_surface_layer_list_);
   }
 }
 
 static void ClearRenderSurfacesOnLayerImplRecursive(LayerImpl* current)
 {
     DCHECK(current);
     for (size_t i = 0; i < current->children().size(); ++i)
         ClearRenderSurfacesOnLayerImplRecursive(current->children()[i]);
@@ skipping 70 matching lines @@
   return tree->LayerById(id);
 }
 
 LayerImpl* LayerTreeImpl::FindPendingTreeLayerById(int id) {
   LayerTreeImpl* tree = layer_tree_host_impl_->pendingTree();
   if (!tree)
     return NULL;
   return tree->LayerById(id);
 }
 
+int LayerTreeImpl::MaxTextureSize() const {
+  return layer_tree_host_impl_->rendererCapabilities().maxTextureSize;
+}
+
 void LayerTreeImpl::SetNeedsRedraw() {
   layer_tree_host_impl_->setNeedsRedraw();
 }
 
 void LayerTreeImpl::SetNeedsUpdateDrawProperties() {
   layer_tree_host_impl_->setNeedsUpdateDrawProperties();
 }
 
 const LayerTreeDebugState& LayerTreeImpl::debug_state() const {
   return layer_tree_host_impl_->debugState();
@@ skipping 21 matching lines @@
 
 AnimationRegistrar* LayerTreeImpl::animationRegistrar() const {
   return layer_tree_host_impl_->animationRegistrar();
 }
 
 const PinchZoomViewport& LayerTreeImpl::pinch_zoom_viewport() const {
   return layer_tree_host_impl_->pinchZoomViewport();
 }
 
 } // namespace cc