Store physical backing size in ViewAndroid

content/browser/renderer_host/render_widget_host_view_android.h

Index: content/browser/renderer_host/render_widget_host_view_android.h
diff --git a/content/browser/renderer_host/render_widget_host_view_android.h b/content/browser/renderer_host/render_widget_host_view_android.h
index 8a7c1cc5754d3f1f880aadd8363a3e89155608f6..aa85ccba59fb143a9c0d5323649cc3df0e7fdc9d 100644
--- a/content/browser/renderer_host/render_widget_host_view_android.h
+++ b/content/browser/renderer_host/render_widget_host_view_android.h
@@ -185,6 +185,7 @@ class CONTENT_EXPORT RenderWidgetHostViewAndroid
                     bool for_touch_handle) override;
   bool OnMouseEvent(const ui::MotionEventAndroid& m) override;
   bool OnMouseWheelEvent(const ui::MotionEventAndroid& event) override;
+  void OnPhysicalBackingSizeChanged() override;
 
   // ui::GestureProviderClient implementation.
   void OnGestureEvent(const ui::GestureEventData& gesture) override;