[Chromecast] Allow CMA backend to notify of key expiry

chromecast/media/cma/backend/audio_video_pipeline_device_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 <vector>
 
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
@@ skipping 81 matching lines @@
 
   void Start();
 
   // MediaPipelineBackend::Delegate implementation:
   void OnVideoResolutionChanged(MediaPipelineBackend::VideoDecoder* decoder,
                                 const Size& size) override {}
   void OnPushBufferComplete(MediaPipelineBackend::Decoder* decoder,
                             MediaPipelineBackend::BufferStatus status) override;
   void OnEndOfStream(MediaPipelineBackend::Decoder* decoder) override;
   void OnDecoderError(MediaPipelineBackend::Decoder* decoder) override;
+  void OnKeyStatusChanged(const std::string& key_id,
+                          CastKeyStatus key_status,
+                          uint32_t system_code) override;
 
  private:
   void Initialize();
 
   void LoadAudioStream(const std::string& filename);
   void LoadVideoStream(const std::string& filename, bool raw_h264);
 
   void FeedAudioBuffer();
   void FeedVideoBuffer();
 
@@ skipping 223 matching lines @@
     ASSERT_TRUE(success);
     base::MessageLoop::current()->QuitWhenIdle();
   }
 }
 
 void AudioVideoPipelineDeviceTest::OnDecoderError(
     MediaPipelineBackend::Decoder* decoder) {
   ASSERT_TRUE(false);
 }
 
+void AudioVideoPipelineDeviceTest::OnKeyStatusChanged(const std::string& key_id,
+                                                      CastKeyStatus key_status,
+                                                      uint32_t system_code) {
+  ASSERT_TRUE(false);
+}
+
 void AudioVideoPipelineDeviceTest::OnPushBufferComplete(
     MediaPipelineBackend::Decoder* decoder,
     MediaPipelineBackend::BufferStatus status) {
   EXPECT_NE(status, MediaPipelineBackend::kBufferFailed);
 
   if (decoder == audio_decoder_) {
     if (audio_feeding_completed_)
       return;
 
     base::ThreadTaskRunnerHandle::Get()->PostTask(
@@ skipping 120 matching lines @@
 TEST_F(AudioVideoPipelineDeviceTest, WebmPlayback) {
   scoped_ptr<base::MessageLoop> message_loop(new base::MessageLoop());
 
   ConfigureForFile("bear-640x360.webm");
   Start();
   message_loop->Run();
 }
 
 }  // namespace media
 }  // namespace chromecast