Revert of content: build fix about ContentDecryptorDelegate

content/renderer/pepper/content_decryptor_delegate.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 "content/renderer/pepper/content_decryptor_delegate.h"
 
 #include <string.h>
 #include <utility>
 #include <vector>
 
@@ skipping 1049 matching lines @@
   DVLOG(2) << "DeliverSamples() - request_id: " << request_id;
 
   // If the request ID is not valid or does not match what's saved, do nothing.
   if (request_id == 0 || !audio_decode_cb_.Matches(request_id)) {
     DVLOG(1) << "DeliverSamples() - request_id " << request_id << " not found";
     return;
   }
 
   Decryptor::AudioDecodeCB audio_decode_cb = audio_decode_cb_.ResetAndReturn();
 
-  const Decryptor::AudioFrames empty_frames = Decryptor::AudioFrames();
+  const Decryptor::AudioFrames empty_frames;
 
   Decryptor::Status status =
       PpDecryptResultToMediaDecryptorStatus(sample_info->result);
   if (status != Decryptor::kSuccess) {
     audio_decode_cb.Run(status, empty_frames);
     return;
   }
 
   media::SampleFormat sample_format =
       PpDecryptedSampleFormatToMediaSampleFormat(sample_info->format);
@@ skipping 191 matching lines @@
   audio_input_resource_ = NULL;
   video_input_resource_ = NULL;
 
   if (!audio_decrypt_cb_.is_null())
     audio_decrypt_cb_.ResetAndReturn().Run(media::Decryptor::kError, NULL);
 
   if (!video_decrypt_cb_.is_null())
     video_decrypt_cb_.ResetAndReturn().Run(media::Decryptor::kError, NULL);
 
   if (!audio_decode_cb_.is_null()) {
-    const media::Decryptor::AudioFrames empty_frames = Decryptor::AudioFrames();
+    const media::Decryptor::AudioFrames empty_frames;
     audio_decode_cb_.ResetAndReturn().Run(media::Decryptor::kError,
                                           empty_frames);
   }
 
   if (!video_decode_cb_.is_null())
     video_decode_cb_.ResetAndReturn().Run(media::Decryptor::kError, NULL);
 
   cdm_promise_adapter_.Clear();
 }
 
 }  // namespace content