Replace Pipeline::SetNetworkActivity() with BufferedDataSource -> WebMediaPlayerImpl callback.

media/filters/chunk_demuxer_unittest.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 "base/bind.h"
 #include "media/base/audio_decoder_config.h"
 #include "media/base/decoder_buffer.h"
 #include "media/base/mock_callback.h"
 #include "media/base/mock_demuxer_host.h"
 #include "media/base/test_data_util.h"
@@ skipping 167 matching lines @@
     std::vector<std::string> codecs(2);
     codecs[0] = "vp8";
     codecs[1] = "vorbis";
     return demuxer_->AddId(kSourceId, "video/webm", codecs);
   }
 
   bool AppendData(const uint8* data, size_t length) {
     CHECK(length);
     EXPECT_CALL(host_, AddBufferedByteRange(_, _)).Times(AnyNumber())
         .WillRepeatedly(SaveArg<1>(&buffered_bytes_));
-    EXPECT_CALL(host_, SetNetworkActivity(true))
-        .Times(AnyNumber());
     return demuxer_->AppendData(kSourceId, data, length);
   }
 
   bool AppendDataInPieces(const uint8* data, size_t length) {
     return AppendDataInPieces(data, length, 7);
   }
 
   bool AppendDataInPieces(const uint8* data, size_t length, size_t piece_size) {
     const uint8* start = data;
     const uint8* end = data + length;
@@ skipping 890 matching lines @@
 
   std::vector<std::string> codecs(1);
   codecs[0] = "vp8";
   ASSERT_EQ(demuxer_->AddId(kSourceId, "video/webm", codecs),
             ChunkDemuxer::kOk);
 
   ASSERT_TRUE(AppendInfoTracks(true, true, false));
 }
 
 }  // namespace media