IPC->mojo of audio_renderer_host

media/media_options.gni

Index: media/media_options.gni
diff --git a/media/media_options.gni b/media/media_options.gni
index 09e1cc2280e782389522e25842d89b666d109a95..67a570a0cd9ca9075193129d6ad6231916e88de6 100644
--- a/media/media_options.gni
+++ b/media/media_options.gni
@@ -77,6 +77,9 @@ declare_args() {
   # Enable the TestMojoMediaClient to be used in MojoMediaApplication. This is
   # for testing only and will override the default platform MojoMediaClient.
   enable_test_mojo_media_client = false
+
+  # Used to enable mojo WebAudio rendering service.
+  enable_mojo_audio = true
 }
 
 # Use a second declare_args() to pick up possible overrides of enable_mojo_media
@@ -122,4 +125,23 @@ declare_args() {
       mojo_media_host = "gpu"
     }
   }
+
+  # The process to host the mojo audio application.
+  # Valid options are:
+  # - "none": Do not use mojo audio application.
+  # - "browser": Use mojo audio application hosted in the browser process.
+  # - "gpu": Use mojo audio application hosted in the gpu process.

[o1ka, 2016/09/02 07:31:46]

Where does this list of options come from?

+  # - "utility": Use mojo audio application hosted in the utility process.
+  mojo_audio_host = "none"
+
+  if (enable_mojo_audio) {
+    mojo_audio_host = "browser"
+  }
+}
+
+if (enable_mojo_audio) {
+  assert(mojo_audio_host == "browser",
+         "Mojo audio not supported outside browser process.")
+} else {
+  assert(mojo_audio_host == "none", "Mojo audio is not enabled.")
 }