Fire canplaythrough as soon as download defers to fix autoplay

media/base/download_rate_monitor.h

 // Copyright (c) 2011 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.
 
 #ifndef MEDIA_BASE_DOWNLOAD_RATE_MONITOR_H_
 #define MEDIA_BASE_DOWNLOAD_RATE_MONITOR_H_
 
 #include <deque>
 
 #include "base/callback.h"
@@ skipping 108 matching lines @@
   // without needing to pause to buffer.
   base::Closure canplaythrough_cb_;
 
   // Indicates whether the monitor has run the |canplaythrough_cb_|.
   bool has_notified_can_play_through_;
 
   // Measurements used to approximate download speed.
   Sample current_sample_;
   std::deque<Sample> sample_window_;
 
-  // True if actively downloading bytes, false otherwise.
-  bool is_downloading_data_;
-
   // Total number of bytes in the media file, 0 if unknown or undefined.
   int64 total_bytes_;
 
   // Amount of bytes buffered.
   int64 buffered_bytes_;
 
   // True if the media file is from a local source, e.g. file:// protocol or a
   // webcam stream.
   bool local_source_;
 
   // Bitrate of the media file, 0 if unknown.
   int bitrate_;
 
   // True if the monitor has not yet started or has been stopped, false
   // otherwise.
   bool stopped_;
 
   // True if the data source is a streaming source, false otherwise.
   bool streaming_;
 
+  // True if downloading has been deferred at least once, false otherwise.
+  bool has_deferred_;
+
   DISALLOW_COPY_AND_ASSIGN(DownloadRateMonitor);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_DOWNLOAD_RATE_MONITOR_H_