[Aura] Translate web contents area to nearest physical pixel boundary

content/browser/renderer_host/render_widget_host_view_aura.h

Index: content/browser/renderer_host/render_widget_host_view_aura.h
diff --git a/content/browser/renderer_host/render_widget_host_view_aura.h b/content/browser/renderer_host/render_widget_host_view_aura.h
index e5183f9d004e7e65c3c9219915f38f8b876514f9..34eb6f42177bf62051e96a382fa64a8bbd3732cb 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura.h
+++ b/content/browser/renderer_host/render_widget_host_view_aura.h
@@ -360,6 +360,8 @@ class CONTENT_EXPORT RenderWidgetHostViewAura
 
   void UpdateCursorIfOverSelf();
 
+  void SnapToPhysicalPixelBoundary();
+
   // Set the bounds of the window and handle size changes.  Assumes the caller
   // has already adjusted the origin of |rect| to conform to whatever coordinate
   // space is required by the aura::Window.