Add a media pipeline status error code for decryption error.

media/filters/ffmpeg_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/ffmpeg_video_decoder.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/message_loop.h"
 #include "base/string_number_conversions.h"
@@ skipping 268 matching lines @@
   //     Any time Flush() is called.
 
   // Transition to kFlushCodec on the first end of stream buffer.
   if (state_ == kNormal && buffer->IsEndOfStream()) {
     state_ = kFlushCodec;
   }
 
   scoped_refptr<Buffer> unencrypted_buffer = buffer;
   if (buffer->GetDecryptConfig() && buffer->GetDataSize()) {
     unencrypted_buffer = decryptor_.Decrypt(buffer);
-    // TODO(xhwang): Add a decryption error code, see http://crbug.com/121177
     if (!unencrypted_buffer || !unencrypted_buffer->GetDataSize()) {
       state_ = kDecodeFinished;
       DeliverFrame(VideoFrame::CreateEmptyFrame());
-      host()->SetError(PIPELINE_ERROR_DECODE);
+      host()->SetError(PIPELINE_ERROR_DECRYPT);
       return;
     }
   }
 
   scoped_refptr<VideoFrame> video_frame;
   if (!Decode(unencrypted_buffer, &video_frame)) {
     state_ = kDecodeFinished;
     DeliverFrame(VideoFrame::CreateEmptyFrame());
     host()->SetError(PIPELINE_ERROR_DECODE);
     return;
@@ skipping 141 matching lines @@
 scoped_refptr<VideoFrame> FFmpegVideoDecoder::AllocateVideoFrame() {
   VideoFrame::Format format = PixelFormatToVideoFormat(codec_context_->pix_fmt);
   size_t width = codec_context_->width;
   size_t height = codec_context_->height;
 
   return VideoFrame::CreateFrame(format, width, height,
                                  kNoTimestamp(), kNoTimestamp());
 }
 
 }  // namespace media