Change image document zooming logic.

third_party/WebKit/Source/core/testing/DummyPageHolder.cpp

 /*
  * Copyright (c) 2013, 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 65 matching lines @@
     // FIXME: http://crbug.com/363843. This needs to find a better way to
     // not create graphics layers.
     settings.setAcceleratedCompositingEnabled(false);
     if (settingOverrider)
         (*settingOverrider)(settings);
 
     m_frameLoaderClient = frameLoaderClient;
     if (!m_frameLoaderClient)
         m_frameLoaderClient = EmptyFrameLoaderClient::create();
 
-    m_frame = LocalFrame::create(m_frameLoaderClient.get(), &m_page->frameHost(), 0);
+    m_frame = LocalFrame::create(m_frameLoaderClient.get(), &m_page->frameHost(), nullptr);
     m_frame->setView(FrameView::create(m_frame.get(), initialViewSize));
     m_frame->view()->page()->frameHost().visualViewport().setSize(initialViewSize);
     m_frame->init();
 }
 
 DummyPageHolder::~DummyPageHolder()
 {
     m_page->willBeDestroyed();
     m_page.clear();
     m_frame.clear();
@@ skipping 14 matching lines @@
 {
     return *m_frame->view();
 }
 
 Document& DummyPageHolder::document() const
 {
     return *m_frame->domWindow()->document();
 }
 
 } // namespace blink