Expose Frame::detach() to the Blink API layer.

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 "core/frame/RemoteFrame.h"
 #include "core/html/HTMLFrameOwnerElement.h"
 #include "platform/UserGestureIndicator.h"
@@ skipping 69 matching lines @@
     oldFrame->disconnectOwnerElement();
     if (frame->isWebLocalFrame()) {
         toWebLocalFrameImpl(frame)->initializeCoreFrame(oldFrame->host(), owner, oldFrame->tree().name(), nullAtom);
     } else {
         toWebRemoteFrameImpl(frame)->initializeCoreFrame(oldFrame->host(), owner, oldFrame->tree().name());
     }
 
     return true;
 }
 
+void WebFrame::detach()
+{
+    toCoreFrame(this)->detach();
+}
+
 WebFrame* WebFrame::opener() const
 {
     return m_opener;
 }
 
 void WebFrame::setOpener(WebFrame* opener)
 {
     if (m_opener)
         m_opener->m_openedFrameTracker->remove(this);
     if (opener)
@@ skipping 131 matching lines @@
             visitor->trace(toWebLocalFrameImpl(child));
         else
             visitor->trace(toWebRemoteFrameImpl(child));
 
         child = child->nextSibling();
     }
 #endif
 }
 
 } // namespace blink