Add Mojo API for Blink hit testing

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

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be found
 // in the LICENSE file.
 
 #include "core/frame/WebViewFrameWidget.h"
 
 #include "core/exported/WebViewBase.h"
 #include "core/frame/WebLocalFrameBase.h"
 #include "core/layout/HitTestResult.h"
 
@@ skipping 70 matching lines @@
 
 void WebViewFrameWidget::CompositeAndReadbackAsync(
     WebCompositeAndReadbackAsyncCallback* callback) {
   return web_view_->CompositeAndReadbackAsync(callback);
 }
 
 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);
 }
 
 void WebViewFrameWidget::SetCursorVisibilityState(bool is_visible) {
   return web_view_->SetCursorVisibilityState(is_visible);
 }
 
 bool WebViewFrameWidget::HasTouchEventHandlersAt(const WebPoint& point) {
@@ skipping 146 matching lines @@
 
 CompositorAnimationHost* WebViewFrameWidget::AnimationHost() const {
   return web_view_->AnimationHost();
 }
 
 HitTestResult WebViewFrameWidget::CoreHitTestResultAt(const WebPoint& point) {
   return web_view_->CoreHitTestResultAt(point);
 }
 
 }  // namespace blink