Revert 118546 because it caused PrerenderHTML5VideoNetwork to timeout on windows and linux

media/base/download_rate_monitor.h

Index: media/base/download_rate_monitor.h
===================================================================
--- media/base/download_rate_monitor.h	(revision 118589)
+++ media/base/download_rate_monitor.h	(working copy)
@@ -1,4 +1,4 @@
-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -126,6 +126,9 @@
   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_;
 
@@ -146,9 +149,6 @@
   // 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);
 };