Plumb whether or not a frame is in shadow DOM to the embedder.

Source/web/WebFrame.cpp

 // Copyright 2014 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 "config.h"
 #include "public/web/WebFrame.h"
 
 #include "bindings/core/v8/WindowProxyManager.h"
 #include "core/frame/FrameHost.h"
 #include "core/frame/FrameView.h"
@@ skipping 250 matching lines @@
 WebFrame* WebFrame::fromFrame(Frame* frame)
 {
     if (!frame)
         return 0;
 
     if (frame->isLocalFrame())
         return WebLocalFrameImpl::fromFrame(toLocalFrame(*frame));
     return WebRemoteFrameImpl::fromFrame(toRemoteFrame(*frame));
 }
 
-WebFrame::WebFrame()
-    : m_parent(0)
+WebFrame::WebFrame(WebTreeScopeType scope)
+    : m_scope(scope)
+    , m_parent(0)
     , m_previousSibling(0)
     , m_nextSibling(0)
     , m_firstChild(0)
     , m_lastChild(0)
     , m_opener(0)
     , m_openedFrameTracker(new OpenedFrameTracker)
 {
 }
 
 WebFrame::~WebFrame()
@@ skipping 50 matching lines @@
     bool WebFrame::isFrameAlive(VisitorDispatcher visitor, const WebFrame* frame) { return isFrameAliveImpl(visitor, frame); } \
     void WebFrame::clearWeakFrames(VisitorDispatcher visitor) { clearWeakFramesImpl(visitor); }
 
 DEFINE_VISITOR_METHOD(Visitor*)
 DEFINE_VISITOR_METHOD(InlinedGlobalMarkingVisitor)
 
 #undef DEFINE_VISITOR_METHOD
 #endif
 
 } // namespace blink