Move Location to DOMWindow

Source/core/frame/DOMWindow.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 "core/frame/DOMWindow.h"
 
 #include "core/dom/SecurityContext.h"
 #include "core/frame/Frame.h"
 #include "core/frame/FrameClient.h"
+#include "core/frame/Location.h"
 #include "platform/weborigin/KURL.h"
 #include "platform/weborigin/SecurityOrigin.h"
 
 namespace blink {
 
+DOMWindow::~DOMWindow()
+{
+}
+
+Location* DOMWindow::location() const
+{
+    if (!m_location)
+        m_location = Location::create(frame());
+    return m_location.get();
+}
+
 bool DOMWindow::closed() const
 {
     return !frame() || !frame()->host();
 }
 
 unsigned DOMWindow::length() const
 {
     return frame() ? frame()->tree().scopedChildCount() : 0;
 }
 
@@ skipping 59 matching lines @@
             return false;
 
         // FIXME: The name canAccess seems to be a roundabout way to ask "can execute script".
         // Can we name the SecurityOrigin function better to make this more clear?
         if (callingWindow.frame()->securityContext()->securityOrigin()->canAccess(frame()->securityContext()->securityOrigin()))
             return false;
     }
     return true;
 }
 
+void DOMWindow::resetLocation()
+{
+    // Location needs to be reset manually because it doesn't inherit from DOMWindowProperty.
+    // DOMWindowProperty is local-only, and Location needs to support remote windows, too.
+    if (m_location) {
+        m_location->reset();
+        m_location = nullptr;
+    }
+}
+
+void DOMWindow::trace(Visitor* visitor)
+{
+    visitor->trace(m_location);
+    EventTargetWithInlineData::trace(visitor);
+}
+
 } // namespace blink