mash: Allow a subset of D-Bus clients to be created in DBusThreadManager

ash/common/DEPS

Index: ash/common/DEPS
diff --git a/ash/common/DEPS b/ash/common/DEPS
index 586757eb0d430f77e9c86baa17513d38b4609413..bc501407d28c3d41f239d668939a07d634f30d49 100644
--- a/ash/common/DEPS
+++ b/ash/common/DEPS
@@ -6,10 +6,21 @@ include_rules = [
   "+ash/shared",
   "+ui",
   "-ui/aura",
+
+  #JAMES move this up to ash/DEPS and allow exceptions for
+  #everything that runs an app, including ash/mus/ window manager,
+  #AshTestBase.
+
+  # Use ash/common/dbus_thread_manager_ash.h
+  "-chromeos/dbus/dbus_thread_manager.h",
 ]
 
 specific_include_rules = {
   ".*test\.cc": [
     "+ash/test",
+  ],
+
+  "dbus_thread_manager_ash.cc": [
+    "+chromeos/dbus/dbus_thread_manager.h",
   ]
 }