Move Frame to the Oilpan heap.

Source/modules/screen_orientation/ScreenOrientationController.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 "modules/screen_orientation/ScreenOrientationController.h"
 
 #include "core/events/Event.h"
 #include "core/frame/FrameView.h"
 #include "core/frame/LocalFrame.h"
 #include "core/page/Page.h"
 #include "modules/screen_orientation/ScreenOrientation.h"
 #include "modules/screen_orientation/ScreenOrientationDispatcher.h"
 #include "platform/LayoutTestSupport.h"
 #include "platform/PlatformScreen.h"
 #include "public/platform/WebScreenOrientationClient.h"
 
 namespace blink {
 
 ScreenOrientationController::~ScreenOrientationController()
 {
 }
 
-void ScreenOrientationController::persistentHostHasBeenDestroyed()
-{
-    // Unregister lifecycle observation once page is being torn down.
-    observeContext(0);
-}
-
 void ScreenOrientationController::provideTo(LocalFrame& frame, WebScreenOrientationClient* client)
 {
     ASSERT(RuntimeEnabledFeatures::screenOrientationEnabled());
 
     ScreenOrientationController* controller = new ScreenOrientationController(frame, client);
     WillBeHeapSupplement<LocalFrame>::provideTo(frame, supplementName(), adoptPtrWillBeNoop(controller));
 }
 
 ScreenOrientationController* ScreenOrientationController::from(LocalFrame& frame)
 {
@@ skipping 80 matching lines @@
     ASSERT(RuntimeEnabledFeatures::screenOrientationEnabled());
 
     if (!m_orientation || !page() || page()->visibilityState() != PageVisibilityStateVisible)
         return;
 
     updateOrientation();
 
     // Keep track of the frames that need to be notified before notifying the
     // current frame as it will prevent side effects from the change event
     // handlers.
-    Vector<RefPtr<LocalFrame> > childFrames;
+    WillBeHeapVector<RefPtrWillBeMember<LocalFrame> > childFrames;
     for (Frame* child = m_frame.tree().firstChild(); child; child = child->tree().nextSibling()) {
         if (child->isLocalFrame())
             childFrames.append(toLocalFrame(child));
     }
 
     // Notify current orientation object.
     if (!m_dispatchEventTimer.isActive())
         m_dispatchEventTimer.startOneShot(0, FROM_HERE);
 
     // ... and child frames, if they have a ScreenOrientationController.
     for (size_t i = 0; i < childFrames.size(); ++i) {
-        ScreenOrientationController* controller = ScreenOrientationController::from(*childFrames[i]);
-        if (controller)
+        if (ScreenOrientationController* controller = ScreenOrientationController::from(*childFrames[i]))
             controller->notifyOrientationChanged();
     }
 }
 
 void ScreenOrientationController::setOrientation(ScreenOrientation* orientation)
 {
     m_orientation = orientation;
     if (m_orientation)
         updateOrientation();
     notifyDispatcher();
@@ skipping 51 matching lines @@
         stopUpdating();
 }
 
 void ScreenOrientationController::trace(Visitor* visitor)
 {
     visitor->trace(m_orientation);
     WillBeHeapSupplement<LocalFrame>::trace(visitor);
 }
 
 } // namespace blink