Transition media element to HAVE_CURRENT_DATA upon underflow.

media/renderers/renderer_impl.cc

 // Copyright 2014 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.
 
 #include "media/renderers/renderer_impl.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/callback.h"
@@ skipping 673 matching lines @@
   // Disable underflow by ignoring updates that renderers have ran out of data.
   if (state_ == STATE_PLAYING && underflow_disabled_for_testing_ &&
       time_ticking_) {
     DVLOG(1) << "Update ignored because underflow is disabled for testing.";
     return;
   }
 
   // Renderer underflowed.
   if (!was_waiting_for_enough_data && WaitingForEnoughData()) {
     PausePlayback();
-
-    // TODO(scherkus): Fire BUFFERING_HAVE_NOTHING callback to alert clients of
-    // underflow state http://crbug.com/144683
+    client_->OnBufferingStateChange(BUFFERING_HAVE_NOTHING);
     return;
   }
 
   // Renderer prerolled.
   if (was_waiting_for_enough_data && !WaitingForEnoughData()) {
     StartPlayback();
     client_->OnBufferingStateChange(BUFFERING_HAVE_ENOUGH);
     return;
   }
 }
@@ skipping 138 matching lines @@
   DCHECK(task_runner_->BelongsToCurrentThread());
   client_->OnVideoNaturalSizeChange(size);
 }
 
 void RendererImpl::OnVideoOpacityChange(bool opaque) {
   DCHECK(task_runner_->BelongsToCurrentThread());
   client_->OnVideoOpacityChange(opaque);
 }
 
 }  // namespace media