Move Frame to the Oilpan heap.

Source/web/WebViewImpl.cpp

Index: Source/web/WebViewImpl.cpp
diff --git a/Source/web/WebViewImpl.cpp b/Source/web/WebViewImpl.cpp
index ed67d3c13a51a80ff78c4f222a4cc9401e4a4ea7..74092761397a34730c649cd2b18d83b0c11b6351 100644
--- a/Source/web/WebViewImpl.cpp
+++ b/Source/web/WebViewImpl.cpp
@@ -210,10 +210,10 @@ const double WebView::maxTextSizeMultiplier = 3.0;
 
 // Used to defer all page activity in cases where the embedder wishes to run
 // a nested event loop. Using a stack enables nesting of message loop invocations.
-static Vector<ScopedPageLoadDeferrer*>& pageLoadDeferrerStack()
+static WillBeHeapVector<RawPtrWillBeMember<ScopedPageLoadDeferrer> >& pageLoadDeferrerStack()
 {
-    DEFINE_STATIC_LOCAL(Vector<ScopedPageLoadDeferrer*>, deferrerStack, ());
-    return deferrerStack;
+    DEFINE_STATIC_LOCAL(OwnPtrWillBePersistent<WillBeHeapVector<RawPtrWillBeMember<ScopedPageLoadDeferrer> > >, deferrerStack, (adoptPtrWillBeNoop(new WillBeHeapVector<RawPtrWillBeMember<ScopedPageLoadDeferrer> > ())));
+    return *deferrerStack;
 }
 
 // Ensure that the WebDragOperation enum values stay in sync with the original
@@ -316,16 +316,30 @@ void WebView::didExitModalLoop()
 {
     ASSERT(pageLoadDeferrerStack().size());
 
-    delete pageLoadDeferrerStack().last();
+    ScopedPageLoadDeferrer* deferrer = pageLoadDeferrerStack().last();
+#if ENABLE(OILPAN)
+    deferrer->dispose();
+#else
+    delete deferrer;
+#endif
     pageLoadDeferrerStack().removeLast();
 }
 
 void WebViewImpl::setMainFrame(WebFrame* frame)
 {
-    if (frame->isWebLocalFrame())
+    if (frame->isWebLocalFrame()) {
+#if ENABLE(OILPAN)
+        m_localMainFrame = toWebLocalFrameImpl(frame);
+        m_remoteMainFrame.clear();
+#endif
         toWebLocalFrameImpl(frame)->initializeCoreFrame(&page()->frameHost(), 0, nullAtom, nullAtom);
-    else
+    } else {
+#if ENABLE(OILPAN)
+        m_localMainFrame.clear();
+        m_remoteMainFrame = toWebRemoteFrameImpl(frame);
+#endif
         toWebRemoteFrameImpl(frame)->initializeCoreFrame(&page()->frameHost(), 0, nullAtom);
+    }
 }
 
 void WebViewImpl::setAutofillClient(WebAutofillClient* autofillClient)
@@ -454,6 +468,10 @@ WebViewImpl::WebViewImpl(WebViewClient* client)
 WebViewImpl::~WebViewImpl()
 {
     ASSERT(!m_page);
+#if ENABLE(OILPAN)
+    // At most one Persistent frame reference should be set.
+    ASSERT(!(m_localMainFrame && m_remoteMainFrame));
+#endif
 }
 
 WebLocalFrameImpl* WebViewImpl::mainFrameImpl()
@@ -955,7 +973,7 @@ bool WebViewImpl::handleKeyEvent(const WebKeyboardEvent& event)
         return true;
     }
 
-    RefPtr<Frame> focusedFrame = focusedCoreFrame();
+    RefPtrWillBeRawPtr<Frame> focusedFrame = focusedCoreFrame();
     if (focusedFrame && focusedFrame->isRemoteFrameTemporary()) {
         WebLocalFrameImpl* webFrame = WebLocalFrameImpl::fromFrame(toLocalFrameTemporary(focusedFrame.get()));
         webFrame->client()->forwardInputEvent(&event);
@@ -965,7 +983,7 @@ bool WebViewImpl::handleKeyEvent(const WebKeyboardEvent& event)
     if (!focusedFrame || !focusedFrame->isLocalFrame())
         return false;
 
-    RefPtr<LocalFrame> frame = toLocalFrame(focusedFrame.get());
+    LocalFrame* frame = toLocalFrame(focusedFrame.get());
 
     PlatformKeyboardEventBuilder evt(event);
 
@@ -2027,7 +2045,7 @@ void WebViewImpl::setFocus(bool enable)
     m_page->focusController().setFocused(enable);
     if (enable) {
         m_page->focusController().setActive(true);
-        RefPtr<Frame> focusedFrame = m_page->focusController().focusedFrame();
+        RefPtrWillBeRawPtr<Frame> focusedFrame = m_page->focusController().focusedFrame();
         if (focusedFrame && focusedFrame->isLocalFrame()) {
             LocalFrame* localFrame = toLocalFrame(focusedFrame.get());
             Element* element = localFrame->document()->focusedElement();
@@ -2060,7 +2078,7 @@ void WebViewImpl::setFocus(bool enable)
         if (!frame)
             return;
 
-        RefPtr<Frame> focusedFrame = m_page->focusController().focusedFrame();
+        RefPtrWillBeRawPtr<Frame> focusedFrame = m_page->focusController().focusedFrame();
         if (focusedFrame && focusedFrame->isLocalFrame()) {
             // Finish an ongoing composition to delete the composition node.
             if (toLocalFrame(focusedFrame.get())->inputMethodController().hasComposition()) {
@@ -2671,7 +2689,7 @@ void WebViewImpl::setInitialFocus(bool reverse)
 
 void WebViewImpl::clearFocusedElement()
 {
-    RefPtr<Frame> frame = focusedCoreFrame();
+    RefPtrWillBeRawPtr<Frame> frame = focusedCoreFrame();
     if (!frame || !frame->isLocalFrame())
         return;