Make browser process a singleton service

chrome/app/mash/BUILD.gn

 # Copyright 2016 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/nacl/config.gni")
 import("//chrome/common/features.gni")
 import("//services/catalog/public/tools/catalog.gni")
 import("//services/service_manager/public/service_manifest.gni")
 
 assert(enable_package_mash_services)
@@ skipping 59 matching lines @@
   if (enable_nacl) {
     packaged_services += [ "//components/nacl/loader:nacl_loader_manifest" ]
     if (is_win && target_cpu == "x86") {
       packaged_services += [ "//components/nacl/broker:nacl_broker_manifest" ]
     }
   }
 }
 
 catalog("catalog") {
   embedded_services = [ ":mash_manifest" ]
-  catalog_deps = [ "//chrome/app:catalog" ]
+  catalog_deps = [ "//chrome/app:catalog_for_mash" ]
   standalone_services = [ "//mash/example/views_examples:manifest" ]
 }
 
 catalog_cpp_source("chrome_mash_catalog") {
   catalog = ":catalog"
   generated_function_name = "CreateChromeMashCatalog"
 }
 
 source_set("mash_service_overrides") {
   testonly = true
   data = [
     "mash_service_overrides.json",
   ]
 }