Restore resize throttling on Chrome OS

content/browser/renderer_host/render_widget_host_view_base.cc

 // Copyright (c) 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 "content/browser/renderer_host/render_widget_host_view_base.h"
 
 #include "base/logging.h"
 #include "content/browser/accessibility/browser_accessibility_manager.h"
 #include "content/browser/gpu/gpu_data_manager_impl.h"
 #include "content/browser/renderer_host/input/synthetic_gesture_target_base.h"
@@ skipping 380 matching lines @@
 }
 
 bool RenderWidgetHostViewBase::GetBackgroundOpaque() {
   return background_opaque_;
 }
 
 gfx::Size RenderWidgetHostViewBase::GetPhysicalBackingSize() const {
   gfx::NativeView view = GetNativeView();
   gfx::Display display =
       gfx::Screen::GetScreenFor(view)->GetDisplayNearestWindow(view);
-  return gfx::ToCeiledSize(gfx::ScaleSize(GetViewBounds().size(),
+  return gfx::ToCeiledSize(gfx::ScaleSize(GetRequestedRendererSize(),

[danakj, 2014/05/20 19:28:56]

Hmmm, should we also have a RequestedRendererDeviceScale and store that inside
the resize lock? I wonder if this is an existing DSF race?

                                           display.device_scale_factor()));
 }
 
 float RenderWidgetHostViewBase::GetOverdrawBottomHeight() const {
   return 0.f;
 }
 
 void RenderWidgetHostViewBase::SelectionChanged(const base::string16& text,
                                                 size_t offset,
                                                 const gfx::Range& range) {
   selection_text_ = text;
   selection_text_offset_ = offset;
   selection_range_.set_start(range.start());
   selection_range_.set_end(range.end());
 }
 
+gfx::Size RenderWidgetHostViewBase::GetRequestedRendererSize() const {
+  return GetViewBounds().size();
+}
+
 ui::TextInputClient* RenderWidgetHostViewBase::GetTextInputClient() {
   NOTREACHED();
   return NULL;
 }
 
 bool RenderWidgetHostViewBase::IsShowingContextMenu() const {
   return showing_context_menu_;
 }
 
 void RenderWidgetHostViewBase::SetShowingContextMenu(bool showing) {
@@ skipping 170 matching lines @@
 
 gfx::Size RenderWidgetHostViewBase::GetVisibleViewportSize() const {
   return GetViewBounds().size();
 }
 
 void RenderWidgetHostViewBase::SetInsets(const gfx::Insets& insets) {
   NOTIMPLEMENTED();
 }
 
 }  // namespace content