Delete layout_viewport_size.

cc/input/pinch_zoom_scrollbar.cc

 // Copyright 2013 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/input/pinch_zoom_scrollbar.h"
 
 #include "cc/input/pinch_zoom_scrollbar_geometry.h"
 #include "cc/layers/layer.h"
 #include "cc/trees/layer_tree_host.h"
+#include "ui/gfx/size_conversions.h"
 
 namespace cc {
 
 const float PinchZoomScrollbar::kDefaultOpacity = 0.5f;
 const float PinchZoomScrollbar::kFadeDurationInSeconds = 0.5f;
 
 PinchZoomScrollbar::PinchZoomScrollbar(
     WebKit::WebScrollbar::Orientation orientation, LayerTreeHost* owner)
   : orientation_(orientation),
     owner_(owner) {
@@ skipping 12 matching lines @@
     return root_scroll_layer->scroll_offset().x();
   else
     return root_scroll_layer->scroll_offset().y();
 }
 
 WebKit::WebPoint PinchZoomScrollbar::location() const {
   return WebKit::WebPoint();
 }
 
 WebKit::WebSize PinchZoomScrollbar::size() const {
-  gfx::Size viewport_size = owner_->layout_viewport_size();
-  gfx::Size size;
-  int track_width = PinchZoomScrollbarGeometry::kTrackWidth;
-  if (orientation_ == WebKit::WebScrollbar::Horizontal)
-    size = gfx::Size(viewport_size.width() - track_width, track_width);
-  else
-    size = gfx::Size(track_width, viewport_size.height() - track_width);
-  return WebKit::WebSize(size);
+  return owner_->PinchZoomScrollbarSize(orientation_);
 }
 
 bool PinchZoomScrollbar::enabled() const {
   return true;
 }
 
 int PinchZoomScrollbar::maximum() const {
   const Layer* root_scroll_layer = owner_->RootScrollLayer();
   if (!root_scroll_layer)
     return 0;
@@ skipping 48 matching lines @@
 }
 bool PinchZoomScrollbar::isCustomScrollbar() const {
   return false;
 }
 
 WebKit::WebScrollbar::Orientation PinchZoomScrollbar::orientation() const {
   return orientation_;
 }
 
 }  // namespace cc