Change the type of a SVG <use> element's shadow tree from "user agent" to "closed"

third_party/WebKit/Source/web/WebFrameWidgetImpl.cpp

 /*
  * Copyright (C) 2014 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 726 matching lines @@
 void WebFrameWidgetImpl::handleMouseDown(LocalFrame& mainFrame,
                                          const WebMouseEvent& event) {
   // 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::Button::Left) {
     point = m_localRoot->frameView()->rootFrameToContents(point);
     HitTestResult result(
         m_localRoot->frame()->eventHandler().hitTestResultAtPoint(point));
-    result.setToShadowHostIfInUserAgentShadowRoot();
+    result.setToShadowHostIfInRestrictedShadowRoot();
     Node* hitNode = result.innerNode();
 
     if (!result.scrollbar() && hitNode && hitNode->layoutObject() &&
         hitNode->layoutObject()->isEmbeddedObject()) {
       m_mouseCaptureNode = hitNode;
       TRACE_EVENT_ASYNC_BEGIN0("input", "capturing mouse", this);
     }
   }
 
   PageWidgetEventHandler::handleMouseDown(mainFrame, event);
@@ skipping 350 matching lines @@
                                 WebPageVisibilityStateVisible);
 }
 
 HitTestResult WebFrameWidgetImpl::hitTestResultForRootFramePos(
     const IntPoint& posInRootFrame) {
   IntPoint docPoint(
       m_localRoot->frame()->view()->rootFrameToContents(posInRootFrame));
   HitTestResult result =
       m_localRoot->frame()->eventHandler().hitTestResultAtPoint(
           docPoint, HitTestRequest::ReadOnly | HitTestRequest::Active);
-  result.setToShadowHostIfInUserAgentShadowRoot();
+  result.setToShadowHostIfInRestrictedShadowRoot();
   return result;
 }
 
 InspectorOverlay* WebFrameWidgetImpl::inspectorOverlay() {
   if (!m_localRoot)
     return nullptr;
   if (WebDevToolsAgentImpl* devtools = m_localRoot->devToolsAgentImpl())
     return devtools->overlay();
   return nullptr;
 }
@@ skipping 13 matching lines @@
   return nullptr;
 }
 
 LocalFrame* WebFrameWidgetImpl::focusedLocalFrameAvailableForIme() const {
   if (!m_imeAcceptEvents)
     return nullptr;
   return focusedLocalFrameInWidget();
 }
 
 }  // namespace blink