Add support for the audio-output-device switching IPC mechanism to the renderer lower layers (media…

content/renderer/media/audio_message_filter_unittest.cc

Index: content/renderer/media/audio_message_filter_unittest.cc
diff --git a/content/renderer/media/audio_message_filter_unittest.cc b/content/renderer/media/audio_message_filter_unittest.cc
index 267a547a6753ef1311c709e762c96c023e8bab15..65b3baa6a78b07f68d45eaf45309835bd27451ad 100644
--- a/content/renderer/media/audio_message_filter_unittest.cc
+++ b/content/renderer/media/audio_message_filter_unittest.cc
@@ -31,6 +31,12 @@ class MockAudioDelegate : public media::AudioOutputIPCDelegate {
     length_ = length;
   }
 
+  void OnOutputDeviceSwitched(int request_id,
+                              media::SwitchOutputDeviceResult result) override {
+    output_device_switched_received_ = true;
+    switch_output_device_result_ = result;
+  }
+
   void OnIPCClosed() override {}
 
   void Reset() {
@@ -43,6 +49,10 @@ class MockAudioDelegate : public media::AudioOutputIPCDelegate {
 
     volume_received_ = false;
     volume_ = 0;
+
+    output_device_switched_received_ = false;
+    switch_output_device_result_ =
+        media::SWITCH_OUTPUT_DEVICE_RESULT_ERROR_NOT_SUPPORTED;
   }
 
   bool state_changed_received() { return state_changed_received_; }
@@ -52,6 +62,13 @@ class MockAudioDelegate : public media::AudioOutputIPCDelegate {
   base::SharedMemoryHandle handle() { return handle_; }
   uint32 length() { return length_; }
 
+  bool output_device_switched_received() {
+    return output_device_switched_received_;
+  }
+  media::SwitchOutputDeviceResult switch_output_device_result() {
+    return switch_output_device_result_;
+  }
+
  private:
   bool state_changed_received_;
   media::AudioOutputIPCDelegateState state_;
@@ -63,6 +80,9 @@ class MockAudioDelegate : public media::AudioOutputIPCDelegate {
   bool volume_received_;
   double volume_;
 
+  bool output_device_switched_received_;
+  media::SwitchOutputDeviceResult switch_output_device_result_;
+
   DISALLOW_COPY_AND_ASSIGN(MockAudioDelegate);
 };
 
@@ -102,6 +122,14 @@ TEST(AudioMessageFilterTest, Basic) {
   EXPECT_EQ(media::AUDIO_OUTPUT_IPC_DELEGATE_STATE_PLAYING, delegate.state());
   delegate.Reset();
 
+  // AudioMsg_NotifyOutputDeviceSwitched
+  static const int kSwitchOutputRequestId = 1;
+  EXPECT_FALSE(delegate.output_device_switched_received());
+  filter->OnOutputDeviceSwitched(kStreamId, kSwitchOutputRequestId,
+                                 media::SWITCH_OUTPUT_DEVICE_RESULT_SUCCESS);
+  EXPECT_TRUE(delegate.output_device_switched_received());
+  EXPECT_EQ(media::SWITCH_OUTPUT_DEVICE_RESULT_SUCCESS,
+            delegate.switch_output_device_result());
   message_loop.RunUntilIdle();
 
   ipc->CloseStream();