Add Mojo API for Blink hit testing

third_party/WebKit/Source/core/frame/WebViewFrameWidget.cpp

Index: third_party/WebKit/Source/core/frame/WebViewFrameWidget.cpp
diff --git a/third_party/WebKit/Source/core/frame/WebViewFrameWidget.cpp b/third_party/WebKit/Source/core/frame/WebViewFrameWidget.cpp
index 111c29a3703229550a42fae57c54276f5b79a920..472abc914c49b0239ae57a25cd18a8b9e9cc1a2d 100644
--- a/third_party/WebKit/Source/core/frame/WebViewFrameWidget.cpp
+++ b/third_party/WebKit/Source/core/frame/WebViewFrameWidget.cpp
@@ -90,6 +90,10 @@ void WebViewFrameWidget::ThemeChanged() {
   return web_view_->ThemeChanged();
 }
 
+// WebFrame* WebViewFrameWidget::HitTestFrameAt(const WebFloatPoint& point) {
+//  return web_view_->HitTestFrameAt(point);
+//}
+
 WebInputEventResult WebViewFrameWidget::HandleInputEvent(
     const WebCoalescedInputEvent& event) {
   return web_view_->HandleInputEvent(event);
@@ -241,6 +245,10 @@ CompositorAnimationHost* WebViewFrameWidget::AnimationHost() const {
   return web_view_->AnimationHost();
 }
 
+WebHitTestResult WebViewFrameWidget::HitTestResultAt(const WebPoint& point) {
+  return web_view_->HitTestResultAt(point);
+}
+
 HitTestResult WebViewFrameWidget::CoreHitTestResultAt(const WebPoint& point) {
   return web_view_->CoreHitTestResultAt(point);
 }