ui/gfx: Convert CreateCanvas to use gfx::Size.

ui/gfx/compositor/layer.cc

 // Copyright (c) 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 "ui/gfx/compositor/layer.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 394 matching lines @@
   // setting its canvas directly with SetCanvas().
   if (!delegate_ || layer_updated_externally_)
     return;
   gfx::Rect local_bounds = gfx::Rect(gfx::Point(), bounds_.size());
   gfx::Rect draw_rect = texture_.get() ? invalid_rect_.Intersect(local_bounds) :
       local_bounds;
   if (draw_rect.IsEmpty()) {
     invalid_rect_ = gfx::Rect();
     return;
   }
-  scoped_ptr<gfx::Canvas> canvas(gfx::Canvas::CreateCanvas(
-      draw_rect.width(), draw_rect.height(), false));
+  scoped_ptr<gfx::Canvas> canvas(gfx::Canvas::CreateCanvas(draw_rect.size(),
+                                                           false));
   canvas->Translate(gfx::Point().Subtract(draw_rect.origin()));
   delegate_->OnPaintLayer(canvas.get());
   SetCanvas(*canvas->GetSkCanvas(), draw_rect.origin());
 #endif
 }
 
 void Layer::SetNeedsToRecomputeHole() {
   Layer* root_layer = this;
   while (root_layer->parent_)
     root_layer = root_layer->parent_;
@@ skipping 257 matching lines @@
 #else
     unsigned int texture_id = 0;
 #endif
     web_layer_.to<WebKit::WebExternalTextureLayer>().setTextureId(
         should_draw ? texture_id : 0);
   }
 }
 #endif
 
 }  // namespace ui