Add dedicated PipelineStatus UMAs for encrypted playback

media/filters/decrypting_video_decoder.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/filters/decrypting_video_decoder.h"
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/debug/trace_event.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/single_thread_task_runner.h"
 #include "media/base/bind_to_current_loop.h"
 #include "media/base/decoder_buffer.h"
 #include "media/base/decryptor.h"
 #include "media/base/pipeline.h"
 #include "media/base/video_decoder_config.h"
 #include "media/base/video_frame.h"
 
 namespace media {
 
+const char DecryptingVideoDecoder::kDecoderName[] = "DecryptingVideoDecoder";
+
 DecryptingVideoDecoder::DecryptingVideoDecoder(
     const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
     const SetDecryptorReadyCB& set_decryptor_ready_cb)
     : task_runner_(task_runner),
       state_(kUninitialized),
       set_decryptor_ready_cb_(set_decryptor_ready_cb),
       decryptor_(NULL),
       key_added_while_decode_pending_(false),
       trace_id_(0),
       weak_factory_(this) {}
 
 std::string DecryptingVideoDecoder::GetDisplayName() const {
-  return "DecryptingVideoDecoder";
+  return kDecoderName;
 }
 
 void DecryptingVideoDecoder::Initialize(const VideoDecoderConfig& config,
                                         bool /* low_delay */,
                                         const PipelineStatusCB& status_cb,
                                         const OutputCB& output_cb) {
   DVLOG(2) << "Initialize()";
   DCHECK(task_runner_->BelongsToCurrentThread());
   DCHECK(state_ == kUninitialized ||
          state_ == kIdle ||
@@ skipping 267 matching lines @@
 }
 
 void DecryptingVideoDecoder::DoReset() {
   DCHECK(init_cb_.is_null());
   DCHECK(decode_cb_.is_null());
   state_ = kIdle;
   base::ResetAndReturn(&reset_cb_).Run();
 }
 
 }  // namespace media