Protocol plumbing for audio toggle.

BUG=


Review URL: https://chromiumcodereview.appspot.com/11192042

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@162637 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/remoting/proto/control.proto b/remoting/proto/control.proto
index ebe0358..20f0b9d 100644
--- a/remoting/proto/control.proto
+++ b/remoting/proto/control.proto
@@ -21,6 +21,11 @@
   optional bool enable = 1;
 }
 
+message AudioControl {
+  // Enables the audio channel if true, pauses if false.
+  optional bool enable = 1;
+}
+
 message CursorShapeInfo {
   // Width, height (in screen pixels) of the cursor.
   optional int32 width = 1;