Move PageOverlay::Delegate off the Oilpan heap.

third_party/WebKit/Source/web/InspectorOverlay.cpp

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 87 matching lines @@
     return hoveredNodeForPoint(frame, roundedIntPoint(points[0].pos()), ignorePointerEventsNone);
 }
 } // namespace
 
 class InspectorOverlay::InspectorPageOverlayDelegate final : public PageOverlay::Delegate {
 public:
     explicit InspectorPageOverlayDelegate(InspectorOverlay& overlay)
         : m_overlay(&overlay)
     { }
 
-    DEFINE_INLINE_VIRTUAL_TRACE()
-    {
-        visitor->trace(m_overlay);
-        PageOverlay::Delegate::trace(visitor);
-    }
-
     void paintPageOverlay(const PageOverlay&, GraphicsContext& graphicsContext, const WebSize& webViewSize) const override
     {
         if (m_overlay->isEmpty())
             return;
 
         FrameView* view = m_overlay->overlayMainFrame()->view();
         DCHECK(!view->needsLayout());
         view->paint(graphicsContext, CullRect(IntRect(0, 0, view->width(), view->height())));
     }
 
 private:
-    Member<InspectorOverlay> m_overlay;
+    Persistent<InspectorOverlay> m_overlay;
 };
 
 
 class InspectorOverlay::InspectorOverlayChromeClient final : public EmptyChromeClient {
 public:
     static InspectorOverlayChromeClient* create(ChromeClient& client, InspectorOverlay& overlay)
     {
         return new InspectorOverlayChromeClient(client, overlay);
     }
 
@@ skipping 77 matching lines @@
 {
     m_v8Session = v8Session;
     m_domAgent = domAgent;
     m_cssAgent = cssAgent;
     m_overlayHost->setListener(this);
 }
 
 void InspectorOverlay::invalidate()
 {
     if (!m_pageOverlay)
-        m_pageOverlay = PageOverlay::create(m_webViewImpl, new InspectorPageOverlayDelegate(*this));
+        m_pageOverlay = PageOverlay::create(m_webViewImpl, wrapUnique(new InspectorPageOverlayDelegate(*this)));
 
     m_pageOverlay->update();
 }
 
 void InspectorOverlay::updateAllLifecyclePhases()
 {
     if (isEmpty())
         return;
 
     AutoReset<bool> scoped(&m_inLayout, true);
@@ skipping 560 matching lines @@
 
 void InspectorOverlay::initializeLayoutEditorIfNeeded(Node* node)
 {
     if (m_inspectMode != InspectorDOMAgent::ShowLayoutEditor || !node || !node->isElementNode() || !node->ownerDocument()->isActive() || !m_cssAgent || !m_domAgent)
         return;
     m_layoutEditor = LayoutEditor::create(toElement(node), m_cssAgent, m_domAgent, &overlayMainFrame()->script());
     toChromeClientImpl(m_webViewImpl->page()->chromeClient()).setCursorOverridden(true);
 }
 
 } // namespace blink