Update all float attributes in HTMLMediaElement and related objects to double

Source/WebCore/html/track/TextTrackCue.cpp

 /*
  * Copyright (C) 2011 Google Inc.  All rights reserved.
  * Copyright (C) 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 745 matching lines @@
         
         if (child->isWebVTTElement()) {
             toWebVTTElement(child)->setIsPastNode(isPastNode);
             // Make an elemenet id match a cue id for style matching purposes.
             if (!m_id.isEmpty())
                 toElement(child)->setIdAttribute(AtomicString(m_id.characters(), m_id.length()));
         }
     }
 }
 
-void TextTrackCue::updateDisplayTree(float movieTime)
+void TextTrackCue::updateDisplayTree(double movieTime)
 {
     // The display tree may contain WebVTT timestamp objects representing
     // timestamps (processing instructions), along with displayable nodes.
 
     if (!track()->isRendered())
       return;
 
     // Clear the contents of the set.
     m_cueBackgroundBox->removeChildren();
 
@@ skipping 398 matching lines @@
         return false;
     if (align() != cue.align())
         return false;
     
     return true;
 }
 
 } // namespace WebCore
 
 #endif