mash: Fix launching touch hud app in mash mode.

ash/mus/BUILD.gn

Index: ash/mus/BUILD.gn
diff --git a/ash/mus/BUILD.gn b/ash/mus/BUILD.gn
index be11f920225d74e74489df9fad85068ba33110c2..3c5d25a59736ebbcce97f3f05c2f26c65e476fa7 100644
--- a/ash/mus/BUILD.gn
+++ b/ash/mus/BUILD.gn
@@ -92,6 +92,7 @@ source_set("lib") {
     "//ash",
     "//ash/public/interfaces",
     "//base",
+    "//mash/public/interfaces",
     "//mash/session/public/interfaces",
     "//mojo/common:common_base",
     "//services/shell/public/cpp",
@@ -137,6 +138,7 @@ service("mus") {
   #             can't state that dependency here.
   data_deps = [
     ":manifest",
+    "//ash/touch_hud/mus:touch_hud",

[sky, 2016/09/02 18:42:21]

Shouldn't it be "lib" that his this data_dep?

[riajiang, 2016/09/02 19:05:02]

ash/mus is only going to connect to the touch_hud service and not calling any of
its functions?

[sky, 2016/09/02 19:16:14]

It's the code in accelerator_conroller_delegat_mus doing the connect though,
right? Doesn't that mean anyone linking about "lib" is also calling to touch_hud
and so should get the data_dep?

[riajiang, 2016/09/02 19:31:05]

Yes sorry! I misunderstood your question. Moved it to be under "lib".

     "//services/ui",
   ]