Implement Mac Pop-up Dictionary for OOPIF.

third_party/WebKit/Source/web/WebFrameWidgetImpl.cpp

Index: third_party/WebKit/Source/web/WebFrameWidgetImpl.cpp
diff --git a/third_party/WebKit/Source/web/WebFrameWidgetImpl.cpp b/third_party/WebKit/Source/web/WebFrameWidgetImpl.cpp
index 132364a8ffea5ca12541469836fe9348350d9801..623621eca1d55d51ea3caec379d8618c0bf40a86 100644
--- a/third_party/WebKit/Source/web/WebFrameWidgetImpl.cpp
+++ b/third_party/WebKit/Source/web/WebFrameWidgetImpl.cpp
@@ -1388,6 +1388,14 @@ void WebFrameWidgetImpl::detachCompositorAnimationTimeline(CompositorAnimationTi
         m_layerTreeView->detachCompositorAnimationTimeline(compositorTimeline->animationTimeline());
 }
 
+HitTestResult WebFrameWidgetImpl::coreHitTestResultAt(const WebPoint& pointInViewport)
+{
+    DocumentLifecycle::AllowThrottlingScope throttlingScope(m_localRoot->frame()->document()->lifecycle());
+    FrameView* view = m_localRoot->frameView();
+    IntPoint pointInRootFrame = view->contentsToFrame(view->viewportToContents(pointInViewport));
+    return hitTestResultForRootFramePos(pointInRootFrame);
+}
+
 void WebFrameWidgetImpl::setVisibilityState(WebPageVisibilityState visibilityState)
 {
     if (m_layerTreeView)