Improve DEFINE_STATIC_LOCAL()'s handling of Blink GCed objects.

third_party/WebKit/Source/core/svg/graphics/SVGImage.cpp

 /*
  * Copyright (C) 2006 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2011. 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.
@@ skipping 451 matching lines @@
     if (!data()->size())
         return true;
 
     if (allDataReceived) {
         // SVGImage will fire events (and the default C++ handlers run) but doesn't
         // actually allow script to run so it's fine to call into it. We allow this
         // since it means an SVG data url can synchronously load like other image
         // types.
         EventDispatchForbiddenScope::AllowUserAgentEvents allowUserAgentEvents;
 
-        DEFINE_STATIC_LOCAL(Persistent<FrameLoaderClient>, dummyFrameLoaderClient, (EmptyFrameLoaderClient::create()));
+        DEFINE_STATIC_LOCAL(FrameLoaderClient, dummyFrameLoaderClient, (EmptyFrameLoaderClient::create()));
 
         if (m_page) {
             toLocalFrame(m_page->mainFrame())->loader().load(FrameLoadRequest(0, blankURL(), SubstituteData(data(), AtomicString("image/svg+xml"),
                 AtomicString("UTF-8"), KURL(), ForceSynchronousLoad)));
             return true;
         }
 
         Page::PageClients pageClients;
         fillWithEmptyClients(pageClients);
         m_chromeClient = SVGImageChromeClient::create(this);
@@ skipping 22 matching lines @@
                 page->settings().setMinimumFontSize(defaultSettings.minimumFontSize());
                 page->settings().setMinimumLogicalFontSize(defaultSettings.minimumLogicalFontSize());
                 page->settings().setDefaultFontSize(defaultSettings.defaultFontSize());
                 page->settings().setDefaultFixedFontSize(defaultSettings.defaultFixedFontSize());
             }
         }
 
         LocalFrame* frame = nullptr;
         {
             TRACE_EVENT0("blink", "SVGImage::dataChanged::createFrame");
-            frame = LocalFrame::create(dummyFrameLoaderClient.get(), &page->frameHost(), 0);
+            frame = LocalFrame::create(&dummyFrameLoaderClient, &page->frameHost(), 0);
             frame->setView(FrameView::create(frame));
             frame->init();
         }
 
         FrameLoader& loader = frame->loader();
         loader.forceSandboxFlags(SandboxAll);
 
         frame->view()->setScrollbarsSuppressed(true);
         frame->view()->setCanHaveScrollbars(false); // SVG Images will always synthesize a viewBox, if it's not available, and thus never see scrollbars.
         frame->view()->setTransparent(true); // SVG Images are transparent.
@@ skipping 10 matching lines @@
 
     return m_page;
 }
 
 String SVGImage::filenameExtension() const
 {
     return "svg";
 }
 
 } // namespace blink