Forward mouse down node information to WebWidgetClient

Source/core/input/EventHandler.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2012 Digia Plc. and/or its subsidiary(-ies)
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 980 matching lines @@
             HitTestRequest request(HitTestRequest::ReadOnly | HitTestRequest::Active);
             mev = m_frame->document()->prepareMouseEvent(request, documentPoint, mouseEvent);
         }
 
         if (passMousePressEventToScrollbar(mev))
             swallowEvent = true;
         else
             swallowEvent = handleMousePressEvent(mev);
     }
 
+    if (mev.hitTestResult().innerNode() && mouseEvent.button() == LeftButton) {
+        ASSERT(mouseEvent.type() == PlatformEvent::MousePressed);
+        HitTestResult result = mev.hitTestResult();
+        result.setToShadowHostIfInUserAgentShadowRoot();
+        m_frame->chromeClient().onMouseDown(result.innerNode());
+    }
+
     return swallowEvent;
 }
 
 static DeprecatedPaintLayer* layerForNode(Node* node)
 {
     if (!node)
         return nullptr;
 
     LayoutObject* layoutObject = node->layoutObject();
     if (!layoutObject)
@@ skipping 1016 matching lines @@
     PlatformMouseEvent fakeMouseDown(gestureEvent.position(), gestureEvent.globalPosition(),
         LeftButton, PlatformEvent::MousePressed, gestureEvent.tapCount(),
         static_cast<PlatformEvent::Modifiers>(modifiers | PlatformEvent::LeftButtonDown),
         PlatformMouseEvent::FromTouch,  gestureEvent.timestamp());
     bool swallowMouseDownEvent = !dispatchMouseEvent(EventTypeNames::mousedown, currentHitTest.innerNode(), gestureEvent.tapCount(), fakeMouseDown, true);
     if (!swallowMouseDownEvent)
         swallowMouseDownEvent = handleMouseFocus(MouseEventWithHitTestResults(fakeMouseDown, currentHitTest));
     if (!swallowMouseDownEvent)
         swallowMouseDownEvent = handleMousePressEvent(MouseEventWithHitTestResults(fakeMouseDown, currentHitTest));
 
+    if (currentHitTest.innerNode()) {
+        ASSERT(gestureEvent.type() == PlatformEvent::GestureTap);
+        HitTestResult result = currentHitTest;
+        result.setToShadowHostIfInUserAgentShadowRoot();
+        m_frame->chromeClient().onMouseDown(result.innerNode());
+    }
+
     // FIXME: Use a hit-test cache to avoid unnecessary hit tests. http://crbug.com/398920
     if (currentHitTest.innerNode()) {
         LocalFrame* mainFrame = m_frame->localFrameRoot();
         if (mainFrame && mainFrame->view())
             mainFrame->view()->updateLayoutAndStyleForPainting();
         adjustedPoint = frameView->rootFrameToContents(gestureEvent.position());
         currentHitTest = hitTestResultInFrame(m_frame, adjustedPoint, hitType);
     }
     PlatformMouseEvent fakeMouseUp(gestureEvent.position(), gestureEvent.globalPosition(),
         LeftButton, PlatformEvent::MouseReleased, gestureEvent.tapCount(),
@@ skipping 1714 matching lines @@
 unsigned EventHandler::accessKeyModifiers()
 {
 #if OS(MACOSX)
     return PlatformEvent::CtrlKey | PlatformEvent::AltKey;
 #else
     return PlatformEvent::AltKey;
 #endif
 }
 
 } // namespace blink