[DO NOT COMMIT] Initial MediaPlayerRenderer plumbing and basic features

media/mojo/services/BUILD.gn

Index: media/mojo/services/BUILD.gn
diff --git a/media/mojo/services/BUILD.gn b/media/mojo/services/BUILD.gn
index ca03efcdf7bc05f15137deb31dd07015f9229127..5c8ee895b4de808d72cd74a667e24c45b9ab70f4 100644
--- a/media/mojo/services/BUILD.gn
+++ b/media/mojo/services/BUILD.gn
@@ -107,6 +107,13 @@ component("services") {
     ]
   }
 
+  if (force_mojo_media_player_renderer) {
+    sources += [
+      "mojo_media_player_renderer_helper.cc",
+      "mojo_media_player_renderer_helper.h",
+    ]
+  }
+
   if (enable_test_mojo_media_client) {
     defines += [ "ENABLE_TEST_MOJO_MEDIA_CLIENT" ]
     sources += [