Implement Mac Pop-up Dictionary for OOPIF.

content/browser/renderer_host/render_widget_host_input_event_router.cc

Index: content/browser/renderer_host/render_widget_host_input_event_router.cc
diff --git a/content/browser/renderer_host/render_widget_host_input_event_router.cc b/content/browser/renderer_host/render_widget_host_input_event_router.cc
index d30662c17a268fe3115e4e6e9208a89d0a309bec..a2954923a1251cfbb03fcf22702154c0226c5466 100644
--- a/content/browser/renderer_host/render_widget_host_input_event_router.cc
+++ b/content/browser/renderer_host/render_widget_host_input_event_router.cc
@@ -432,6 +432,16 @@ void RenderWidgetHostInputEventRouter::OnHittestData(
   hittest_data_[params.surface_id] = data;
 }
 
+RenderWidgetHostImpl*
+RenderWidgetHostInputEventRouter::GetRenderWidgetHostAtPoint(
+    RenderWidgetHostViewBase* root_view,
+    const gfx::Point& point,
+    gfx::Point* transformed_point) {
+  return RenderWidgetHostImpl::From(
+      FindEventTarget(root_view, point, transformed_point)
+          ->GetRenderWidgetHost());
+}
+
 void RenderWidgetHostInputEventRouter::RouteTouchscreenGestureEvent(
     RenderWidgetHostViewBase* root_view,
     blink::WebGestureEvent* event,