Add UMA logging to track bad MIME types passed to HTMLMediaElement

third_party/WebKit/Source/core/html/HTMLMediaElement.h

 /*
  * Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple 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 418 matching lines @@
   void addPlayedRange(double start, double end);
 
   // FIXME: Rename to scheduleNamedEvent for clarity.
   void scheduleEvent(const AtomicString& eventName);
 
   // loading
   void invokeLoadAlgorithm();
   void invokeResourceSelectionAlgorithm();
   void loadInternal();
   void selectMediaResource();
-  void loadResource(const WebMediaPlayerSource&, const ContentType&);
+  void loadResource(const WebMediaPlayerSource&, const String& contentType);
   void startPlayerLoad(const KURL& playerProvidedUrl = KURL());
   void setPlayerPreload();
   WebMediaPlayer::LoadType loadType() const;
   void scheduleNextSourceChild();
   void loadSourceFromObject();
   void loadSourceFromAttribute();
   void loadNextSourceChild();
   void clearMediaPlayer();
   void clearMediaPlayerAndAudioSourceProviderClientWithoutLocking();
   bool havePotentialSourceChild();
   void noneSupported();
   void mediaEngineError(MediaError*);
   void cancelPendingEventsAndCallbacks();
   void waitForSourceChange();
   void setIgnorePreloadNone();
 
-  KURL selectNextSourceChild(ContentType*, InvalidURLAction);
+  KURL selectNextSourceChild(String* contentType, InvalidURLAction);
 
   void mediaLoadingFailed(WebMediaPlayer::NetworkState);
 
   // deferred loading (preload=none)
   bool loadIsDeferred() const;
   void deferLoad();
   void cancelDeferredLoad();
   void startDeferredLoad();
   void executeDeferredLoad();
   void deferredLoadTimerFired(TimerBase*);
@@ skipping 301 matching lines @@
 
 inline bool isHTMLMediaElement(const HTMLElement& element) {
   return isHTMLAudioElement(element) || isHTMLVideoElement(element);
 }
 
 DEFINE_HTMLELEMENT_TYPE_CASTS_WITH_FUNCTION(HTMLMediaElement);
 
 }  // namespace blink
 
 #endif  // HTMLMediaElement_h