Move Frame to the Oilpan heap.

Source/core/page/Page.cpp

Index: Source/core/page/Page.cpp
diff --git a/Source/core/page/Page.cpp b/Source/core/page/Page.cpp
index 6c4301285888f9e822356c03aa18484f4eca418d..afdef3e513384bb98684ba4575c359ebc2df5746 100644
--- a/Source/core/page/Page.cpp
+++ b/Source/core/page/Page.cpp
@@ -83,7 +83,7 @@ HashSet<Page*>& Page::ordinaryPages()
 
 void Page::networkStateChanged(bool online)
 {
-    Vector<RefPtr<LocalFrame> > frames;
+    WillBeHeapVector<RefPtrWillBeMember<LocalFrame> > frames;
 
     // Get all the frames of all the pages in all the page groups
     HashSet<Page*>::iterator end = allPages().end();
@@ -265,7 +265,7 @@ void Page::refreshPlugins(bool reload)
 
     PluginData::refresh();
 
-    Vector<RefPtr<LocalFrame> > framesNeedingReload;
+    WillBeHeapVector<RefPtrWillBeMember<LocalFrame> > framesNeedingReload;
 
     HashSet<Page*>::iterator end = allPages().end();
     for (HashSet<Page*>::iterator it = allPages().begin(); it != end; ++it) {
@@ -578,7 +578,7 @@ void Page::didCommitLoad(LocalFrame* frame)
 
 void Page::acceptLanguagesChanged()
 {
-    Vector< RefPtr<LocalFrame> > frames;
+    WillBeHeapVector<RefPtrWillBeMember<LocalFrame> > frames;
 
     // Even though we don't fire an event from here, the LocalDOMWindow's will fire
     // an event so we keep the frames alive until we are done.
@@ -606,6 +606,7 @@ void Page::trace(Visitor* visitor)
 #if ENABLE(OILPAN)
     visitor->trace(m_dragCaretController);
     visitor->trace(m_dragController);
+    visitor->trace(m_focusController);
     visitor->trace(m_contextMenuController);
     visitor->trace(m_inspectorController);
     visitor->trace(m_pointerLockController);
@@ -623,7 +624,7 @@ void Page::willBeDestroyed()
     // Destroy inspector first, since it uses frame and view during destruction.
     m_inspectorController->willBeDestroyed();
 
-    RefPtr<Frame> mainFrame = m_mainFrame;
+    RefPtrWillBeRawPtr<Frame> mainFrame = m_mainFrame;
 
     mainFrame->detach();
 
@@ -646,9 +647,9 @@ void Page::willBeDestroyed()
 #endif
 
     m_chrome->willBeDestroyed();
-    m_mainFrame = 0;
     if (m_validationMessageClient)
         m_validationMessageClient->willBeDestroyed();
+    m_mainFrame = nullptr;
 }
 
 Page::PageClients::PageClients()