arc-bridge: Add the ARC Bridge Service

components/BUILD.gn

Index: components/BUILD.gn
diff --git a/components/BUILD.gn b/components/BUILD.gn
index a1ec4d79bba3fb41dc28a7267b045797bb5335b0..742e51574ee881ada78c0cdbe8ca29e57ec09c2f 100644
--- a/components/BUILD.gn
+++ b/components/BUILD.gn
@@ -217,6 +217,10 @@ group("all_components") {
         "//components/wifi_sync",
       ]
     }
+
+    if (is_chromeos && enable_arc) {
+      deps += [ "//components/arc" ]
+    }
   } else {
     deps += [
       "//components/autofill/ios/browser",
@@ -483,6 +487,9 @@ test("components_unittests") {
     if (is_chromeos) {
       deps += [ "//components/ownership:unit_tests" ]
     }
+    if (is_chromeos && enable_arc) {
+      deps += [ "//components/arc:unit_tests" ]
+    }
 
     # TODO(GYP) need this target.
     #'breakpad/app/crash_keys_win_unittest.cc',