Have Node::document() return a reference instead of a pointer

Source/web/WebMediaPlayerClientImpl.cpp

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "WebMediaPlayerClientImpl.h"
 
 #include "InbandTextTrackPrivateImpl.h"
 #include "MediaSourcePrivateImpl.h"
 #include "WebAudioSourceProvider.h"
@@ skipping 158 matching lines @@
         return 0;
     }
 
     return plugin;
 }
 
 
 // FIXME: Remove this override and cast when Chromium is updated to use closeHelperPluginSoon().
 void WebMediaPlayerClientImpl::closeHelperPlugin()
 {
-    Frame* frame = static_cast<HTMLMediaElement*>(m_client)->document()->frame();
+    Frame* frame = static_cast<HTMLMediaElement*>(m_client)->document().frame();
     WebFrameImpl* webFrame = WebFrameImpl::fromFrame(frame);
     closeHelperPluginSoon(webFrame);
 }
 
 void WebMediaPlayerClientImpl::closeHelperPluginSoon(WebFrame* frame)
 {
     ASSERT(m_helperPlugin);
     toWebViewImpl(frame->view())->closeHelperPluginSoon(m_helperPlugin.release());
 }
 
@@ skipping 69 matching lines @@
 
 void WebMediaPlayerClientImpl::loadInternal()
 {
     m_isMediaStream = WebCore::MediaStreamRegistry::registry().lookupMediaStreamDescriptor(m_url.string());
 
 #if ENABLE(WEB_AUDIO)
     m_audioSourceProvider.wrap(0); // Clear weak reference to m_webMediaPlayer's WebAudioSourceProvider.
 #endif
 
     // FIXME: Remove this cast
-    Frame* frame = static_cast<HTMLMediaElement*>(m_client)->document()->frame();
+    Frame* frame = static_cast<HTMLMediaElement*>(m_client)->document().frame();
 
     // This does not actually check whether the hardware can support accelerated
     // compositing, but only if the flag is set. However, this is checked lazily
     // in WebViewImpl::setIsAcceleratedCompositingActive() and will fail there
     // if necessary.
     m_needsWebLayerForVideo = frame->contentRenderer()->compositor()->hasAcceleratedCompositing();
 
     m_webMediaPlayer = createWebMediaPlayer(this, m_url, frame);
     if (m_webMediaPlayer) {
 #if ENABLE(WEB_AUDIO)
@@ skipping 473 matching lines @@
 
 void WebMediaPlayerClientImpl::AudioClientImpl::setFormat(size_t numberOfChannels, float sampleRate)
 {
     if (m_client)
         m_client->setFormat(numberOfChannels, sampleRate);
 }
 
 #endif
 
 } // namespace WebKit