Revert of Pass initDataType instead of contentType on OnNeedKey().

media/formats/mp4/mp4_stream_parser_unittest.cc

 // Copyright 2014 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 <algorithm>
 #include <string>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/logging.h"
 #include "base/memory/ref_counted.h"
 #include "base/time/time.h"
 #include "media/base/audio_decoder_config.h"
 #include "media/base/decoder_buffer.h"
 #include "media/base/stream_parser_buffer.h"
 #include "media/base/test_data_util.h"
 #include "media/base/text_track_config.h"
 #include "media/base/video_decoder_config.h"
 #include "media/formats/mp4/es_descriptor.h"
 #include "media/formats/mp4/mp4_stream_parser.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using base::TimeDelta;
 
 namespace media {
 namespace mp4 {
 
-static const char kCencInitDataType[] = "cenc";
+// TODO(xhwang): Figure out the init data type appropriately once it's spec'ed.
+static const char kMp4InitDataType[] = "video/mp4";
 
 class MP4StreamParserTest : public testing::Test {
  public:
   MP4StreamParserTest()
       : configs_received_(false),
         lower_bound_(
             DecodeTimestamp::FromPresentationTime(base::TimeDelta::Max())) {
     std::set<int> audio_object_types;
     audio_object_types.insert(kISO_14496_3);
     parser_.reset(new MP4StreamParser(audio_object_types, false));
@@ skipping 75 matching lines @@
       return false;
     }
 
     lower_bound_ = second_highest_timestamp;
     return true;
   }
 
   void KeyNeededF(const std::string& type,
                   const std::vector<uint8>& init_data) {
     DVLOG(1) << "KeyNeededF: " << init_data.size();
-    EXPECT_EQ(kCencInitDataType, type);
+    EXPECT_EQ(kMp4InitDataType, type);
     EXPECT_FALSE(init_data.empty());
   }
 
   void NewSegmentF() {
     DVLOG(1) << "NewSegmentF";
     lower_bound_ = kNoDecodeTimestamp();
   }
 
   void EndOfSegmentF() {
     DVLOG(1) << "EndOfSegmentF()";
@@ skipping 107 matching lines @@
 // Delimiter (AUD) NALU.
 TEST_F(MP4StreamParserTest, VideoSamplesStartWithAUDs) {
   ParseMP4File("bear-1280x720-av_with-aud-nalus_frag.mp4", 512);
 }
 
 // TODO(strobe): Create and test media which uses CENC auxiliary info stored
 // inside a private box
 
 }  // namespace mp4
 }  // namespace media