Support earliest seekable time in WMPI.

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

 /*
  * 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 1721 matching lines @@
     m_cachedTime = webMediaPlayer()->currentTime();
 }
 
 void HTMLMediaElement::invalidateCachedTime()
 {
     WTF_LOG(Media, "HTMLMediaElement::invalidateCachedTime(%p)", this);
     m_cachedTime = std::numeric_limits<double>::quiet_NaN();
 }
 
 // playback state
+double HTMLMediaElement::earliestTime() const
+{
+    if (m_readyState == HAVE_NOTHING)
+        return 0;
+
+    return webMediaPlayer()->earliestTime();
+}
+
 double HTMLMediaElement::currentTime() const
 {
     if (m_defaultPlaybackStartPosition)
         return m_defaultPlaybackStartPosition;
 
     if (m_readyState == HAVE_NOTHING)
         return 0;
 
     if (m_seeking) {
         WTF_LOG(Media, "HTMLMediaElement::currentTime(%p) - seeking, returning %f", this, m_lastSeekTime);
@@ skipping 1903 matching lines @@
     visitor->trace(m_client);
 }
 
 DEFINE_TRACE(HTMLMediaElement::AudioSourceProviderImpl)
 {
     visitor->trace(m_client);
 }
 #endif
 
 }