Fix UpdateTilePriorities viewport in Android WebView.

cc/debug/overdraw_metrics.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/debug/overdraw_metrics.h"
 
 #include "base/debug/trace_event.h"
 #include "base/metrics/histogram.h"
 #include "cc/base/math_util.h"
 #include "cc/trees/layer_tree_host.h"
@@ skipping 133 matching lines @@
   if (record_metrics_for_frame_) {
     RecordMetricsInternal<LayerTreeHostImpl>(DrawingToScreen,
                                              layer_tree_host_impl);
   }
 }
 
 static gfx::Size DeviceViewportSize(const LayerTreeHost* host) {
   return host->device_viewport_size();
 }
 static gfx::Size DeviceViewportSize(const LayerTreeHostImpl* host_impl) {
-  return host_impl->device_viewport_size();
+  return host_impl->DeviceViewport().size();
 }
 
 template <typename LayerTreeHostType>
 void OverdrawMetrics::RecordMetricsInternal(
     MetricsType metrics_type,
     const LayerTreeHostType* layer_tree_host) const {
   // This gives approximately 10x the percentage of pixels to fill the viewport
   // once.
   float normalization = 1000.f / (DeviceViewportSize(layer_tree_host).width() *
                                   DeviceViewportSize(layer_tree_host).height());
@@ skipping 94 matching lines @@
                      contents_texture_use_bytes_,
                      "RenderSurfaceTextureBytes",
                      render_surface_texture_use_bytes_);
       }
       break;
     }
   }
 }
 
 }  // namespace cc