Restore resize throttling on Chrome OS

content/browser/renderer_host/render_widget_host_view_base.h

Index: content/browser/renderer_host/render_widget_host_view_base.h
diff --git a/content/browser/renderer_host/render_widget_host_view_base.h b/content/browser/renderer_host/render_widget_host_view_base.h
index ad85021c85a0d6c210f740879d34ce588b2ca95b..e00c9779946bcb76624a076f3917032e4c628acc 100644
--- a/content/browser/renderer_host/render_widget_host_view_base.h
+++ b/content/browser/renderer_host/render_widget_host_view_base.h
@@ -119,6 +119,10 @@ class CONTENT_EXPORT RenderWidgetHostViewBase : public RenderWidgetHostView,
                                 size_t offset,
                                 const gfx::Range& range);
 
+  // The requested size of the renderer. May differ from GetViewBounds().size()
+  // when the view requires additional throttling.
+  virtual gfx::Size GetRequestedRendererSize() const;
+
   // The size of the view's backing surface in non-DPI-adjusted pixels.
   virtual gfx::Size GetPhysicalBackingSize() const;