WebViewImpl's hit tests should use setToShadowHostIfInUserAgentShadowRoot.

Source/web/WebViewImpl.cpp

 /*
  * Copyright (C) 2011, 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 482 matching lines @@
 
     m_lastMouseDownPoint = WebPoint(event.x, event.y);
 
     // Take capture on a mouse down on a plugin so we can send it mouse events.
     // If the hit node is a plugin but a scrollbar is over it don't start mouse
     // capture because it will interfere with the scrollbar receiving events.
     IntPoint point(event.x, event.y);
     if (event.button == WebMouseEvent::ButtonLeft && m_page->mainFrame()->isLocalFrame() && !m_page->deprecatedLocalMainFrame()->view()->scrollbarAtPoint(point)) {
         point = m_page->deprecatedLocalMainFrame()->view()->windowToContents(point);
         HitTestResult result(m_page->deprecatedLocalMainFrame()->eventHandler().hitTestResultAtPoint(point));
+        result.setToShadowHostIfInUserAgentShadowRoot();
         Node* hitNode = result.innerNonSharedNode();
 
         if (!result.scrollbar() && hitNode && hitNode->renderer() && hitNode->renderer()->isEmbeddedObject()) {
             m_mouseCaptureNode = hitNode;
             TRACE_EVENT_ASYNC_BEGIN0("input", "capturing mouse", this);
         }
     }
 
     PageWidgetEventHandler::handleMouseDown(mainFrame, event);
 
@@ skipping 530 matching lines @@
 
 WebRect WebViewImpl::computeBlockBounds(const WebRect& rect, bool ignoreClipping)
 {
     if (!mainFrameImpl())
         return WebRect();
 
     // Use the rect-based hit test to find the node.
     IntPoint point = mainFrameImpl()->frameView()->windowToContents(IntPoint(rect.x, rect.y));
     HitTestRequest::HitTestRequestType hitType = HitTestRequest::ReadOnly | HitTestRequest::Active | (ignoreClipping ? HitTestRequest::IgnoreClipping : 0);
     HitTestResult result = mainFrameImpl()->frame()->eventHandler().hitTestResultAtPoint(point, hitType, IntSize(rect.width, rect.height));
+    result.setToShadowHostIfInUserAgentShadowRoot();
 
     Node* node = result.innerNonSharedNode();
     if (!node)
         return WebRect();
 
     // Find the block type node based on the hit node.
+    // FIXME: This wants to walk composed tree with NodeRenderingTraversal::parent().
     while (node && (!node->renderer() || node->renderer()->isInline()))
         node = NodeRenderingTraversal::parent(node);
 
     // Return the bounding box in the window coordinate system.
     if (node) {
         IntRect rect = node->Node::pixelSnappedBoundingBox();
         LocalFrame* frame = node->document().frame();
         return frame->view()->contentsToWindow(rect);
     }
     return WebRect();
@@ skipping 135 matching lines @@
     if (!m_page || !m_page->mainFrame())
         return 0;
 
     // FIXME: Rely on earlier hit test instead of hit testing again.
     GestureEventWithHitTestResults targetedEvent =
         m_page->deprecatedLocalMainFrame()->eventHandler().targetGestureEvent(tapEvent, true);
     Node* bestTouchNode = targetedEvent.hitTestResult().targetNode();
 
     // We might hit something like an image map that has no renderer on it
     // Walk up the tree until we have a node with an attached renderer
+    // FIXME: This wants to walk composed tree with NodeRenderingTraversal::parent().
     while (bestTouchNode && !bestTouchNode->renderer())
         bestTouchNode = NodeRenderingTraversal::parent(bestTouchNode);
 
     Node* cursorDefiningAncestor =
         findCursorDefiningAncestor(bestTouchNode, m_page->deprecatedLocalMainFrame());
     // We show a highlight on tap only when the current node shows a hand cursor
     if (!cursorDefiningAncestor || !showsHandCursor(cursorDefiningAncestor, m_page->deprecatedLocalMainFrame())) {
         return 0;
     }
 
@@ skipping 2650 matching lines @@
         return 0;
 
     return document->focusedElement();
 }
 
 HitTestResult WebViewImpl::hitTestResultForWindowPos(const IntPoint& pos)
 {
     if (!m_page->mainFrame()->isLocalFrame())
         return HitTestResult();
     IntPoint docPoint(m_page->deprecatedLocalMainFrame()->view()->windowToContents(pos));
-    return m_page->deprecatedLocalMainFrame()->eventHandler().hitTestResultAtPoint(docPoint, HitTestRequest::ReadOnly | HitTestRequest::Active);
+    HitTestResult result = m_page->deprecatedLocalMainFrame()->eventHandler().hitTestResultAtPoint(docPoint, HitTestRequest::ReadOnly | HitTestRequest::Active);
+    result.setToShadowHostIfInUserAgentShadowRoot();
+    return result;
 }
 
 void WebViewImpl::setTabsToLinks(bool enable)
 {
     m_tabsToLinks = enable;
 }
 
 bool WebViewImpl::tabsToLinks() const
 {
     return m_tabsToLinks;
@@ skipping 373 matching lines @@
     const PageScaleConstraints& constraints = m_pageScaleConstraintsSet.pageDefinedConstraints();
 
     if (!mainFrameImpl() || !mainFrameImpl()->frameView())
         return false;
 
     return mainFrameImpl()->frameView()->layoutSize().width() == m_size.width
         || (constraints.minimumScale == constraints.maximumScale && constraints.minimumScale != -1);
 }
 
 } // namespace blink