Move Frame to the Oilpan heap.

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 202 matching lines @@
     , m_opener(0)
     , m_openedFrameTracker(new OpenedFrameTracker)
 {
 }
 
 WebFrame::~WebFrame()
 {
     m_openedFrameTracker.reset(0);
 }
 
+void WebFrame::trace(Visitor* visitor, WebFrame* frame)
+{
+#if ENABLE(OILPAN)
+    // Trace the children frames.
+    WebFrame* child = frame ? frame->firstChild() : 0;
+    while (child) {
+        if (child->isWebLocalFrame())
+            visitor->trace(toWebLocalFrameImpl(child));
+        else
+            visitor->trace(toWebRemoteFrameImpl(child));
+
+        child = child->nextSibling();
+    }
+#endif
+}
+
 } // namespace blink