Define remote playback proto buffer

media/BUILD.gn

Index: media/BUILD.gn
diff --git a/media/BUILD.gn b/media/BUILD.gn
index afcadfdf74ec632b247a4b95ffc0ca83cea5cff6..e10718ed3b547ba71dfb005c980941329b21944a 100644
--- a/media/BUILD.gn
+++ b/media/BUILD.gn
@@ -472,6 +472,10 @@ component("media") {
     ]
   }
 
+  if (media_remoting) {
+    deps += [ "//media/remoting:rpc" ]

[xhwang, 2016/08/25 20:00:15]

OOC, why media needs to depend on this?

[erickung1, 2016/09/01 09:05:05]

once we checked in the remote renderer and remote media keys implementation,
we'll make change to have media depending on that target, and have that target
depending on rpc.

Currently it is to make sure the code is built without any issue

+  }
+
   public_deps += [
     ":media_features",
     ":shared_memory_support",