Remove stale TODO + unnecessary if-guard in Pipeline::DoSeek().

media/base/pipeline.cc

 // Copyright (c) 2012 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/base/pipeline.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/callback.h"
@@ skipping 1209 matching lines @@
 
   if (pipeline_filter_) {
     pipeline_filter_->Stop(callback);
     return;
   }
 
   callback.Run();
 }
 
 void Pipeline::DoSeek(TimeDelta seek_timestamp) {
-  // TODO(acolwell): We might be able to convert this if (demuxer_) into a
-  // DCHECK(). Further investigation is needed to make sure this won't introduce
-  // a bug.
-  if (demuxer_) {
-    demuxer_->Seek(seek_timestamp, base::Bind(
-        &Pipeline::OnDemuxerSeekDone, this, seek_timestamp));
-    return;
-  }
-
-  OnDemuxerSeekDone(seek_timestamp, PIPELINE_OK);
+  demuxer_->Seek(seek_timestamp, base::Bind(
+      &Pipeline::OnDemuxerSeekDone, this, seek_timestamp));
 }
 
 void Pipeline::OnDemuxerSeekDone(TimeDelta seek_timestamp,
                                  PipelineStatus status) {
   if (!message_loop_->BelongsToCurrentThread()) {
     message_loop_->PostTask(FROM_HERE, base::Bind(
         &Pipeline::OnDemuxerSeekDone, this, seek_timestamp, status));
     return;
   }
 
@@ skipping 25 matching lines @@
 void Pipeline::StartClockIfWaitingForTimeUpdate_Locked() {
   lock_.AssertAcquired();
   if (!waiting_for_clock_update_)
     return;
 
   waiting_for_clock_update_ = false;
   clock_->Play();
 }
 
 }  // namespace media