Move PageOverlay::Delegate off the Oilpan heap.

third_party/WebKit/Source/web/WebViewImpl.cpp

 /*
  * Copyright (C) 2011, 2012 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 297 matching lines @@
     }
 };
 
 class ColorOverlay final : public PageOverlay::Delegate {
 public:
     explicit ColorOverlay(WebColor color)
         : m_color(color)
     {
     }
 
-    virtual ~ColorOverlay()
-    {
-    }
-
 private:
     void paintPageOverlay(const PageOverlay& pageOverlay, GraphicsContext& graphicsContext, const WebSize& size) const override
     {
         if (DrawingRecorder::useCachedDrawingIfPossible(graphicsContext, pageOverlay, DisplayItem::PageOverlay))
             return;
         FloatRect rect(0, 0, size.width, size.height);
         DrawingRecorder drawingRecorder(graphicsContext, pageOverlay, DisplayItem::PageOverlay, rect);
         graphicsContext.fillRect(rect, m_color);
     }
 
@@ skipping 3815 matching lines @@
 }
 
 void WebViewImpl::setPageOverlayColor(WebColor color)
 {
     if (m_pageColorOverlay)
         m_pageColorOverlay.reset();
 
     if (color == Color::transparent)
         return;
 
-    m_pageColorOverlay = PageOverlay::create(this, new ColorOverlay(color));
+    m_pageColorOverlay = PageOverlay::create(this, wrapUnique(new ColorOverlay(color)));
     m_pageColorOverlay->update();
 }
 
 WebPageImportanceSignals* WebViewImpl::pageImportanceSignals()
 {
     return &m_pageImportanceSignals;
 }
 
 Element* WebViewImpl::focusedElement() const
 {
@@ skipping 448 matching lines @@
         return nullptr;
     return focusedFrame;
 }
 
 LocalFrame* WebViewImpl::focusedLocalFrameAvailableForIme() const
 {
     return m_imeAcceptEvents ? focusedLocalFrameInWidget() : nullptr;
 }
 
 } // namespace blink