mash: Add autoclick app.

ash/autoclick/mus/BUILD.gn

Index: ash/autoclick/mus/BUILD.gn
diff --git a/ash/touch_hud/mus/BUILD.gn b/ash/autoclick/mus/BUILD.gn
similarity index 84%
copy from ash/touch_hud/mus/BUILD.gn
copy to ash/autoclick/mus/BUILD.gn
index 47aea01ebdb5dcc8b6312637c33c3978d921f244..140dd0e5f7395b1a1bb7810a393966f3f1b73af6 100644
--- a/ash/touch_hud/mus/BUILD.gn
+++ b/ash/autoclick/mus/BUILD.gn
@@ -9,13 +9,14 @@ import("//mojo/public/tools/bindings/mojom.gni")
 
 source_set("lib") {
   sources = [
-    "touch_hud_application.cc",
-    "touch_hud_application.h",
+    "autoclick_application.cc",
+    "autoclick_application.h",
   ]
 
   deps = [
+    "//ash/autoclick/common:autoclick",
+    "//ash/autoclick/mus/public/interfaces",
     "//ash/public/interfaces",
-    "//ash/touch_hud",
     "//base",
     "//mash/public/interfaces",
     "//mojo/common",
@@ -33,7 +34,7 @@ source_set("lib") {
   ]
 }
 
-service("touch_hud") {
+service("accessibility_autoclick") {

[sky, 2016/09/09 21:42:29]

Is there a reason why you want to prefix with accessibility_? Why not
'autoclick'?

[riajiang, 2016/09/12 16:15:46]

I was thinking to make it clear that this service is part of the accessibility
services (forgot to update touch_hud). What do you think? 

   sources = [
     "main.cc",
   ]
@@ -55,6 +56,6 @@ service("touch_hud") {
 }
 
 service_manifest("manifest") {
-  name = "touch_hud"
+  name = "accessibility_autoclick"
   source = "manifest.json"
 }