Convert utility process extension Unpacker IPC to mojo

extensions/browser/BUILD.gn

 # Copyright 2014 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/features.gni")
 import("//extensions/features/features.gni")
 
 group("browser") {
   public_deps = [
     "//extensions/browser:browser_context_keyed_service_factories",
@@ skipping 277 matching lines @@
     ]
 
     deps += [
       "//components/crx_file",
       "//components/prefs",
       "//components/sync",
       "//components/update_client",
       "//components/variations",
       "//crypto:platform",
       "//extensions:extensions_browser_resources",
-      "//extensions/common:mojo",
+      "//extensions/common",
       "//services/service_manager/public/cpp",
     ]
   }
 }
 
 source_set("browser_tests") {
   testonly = true
   sources = [
     "api/audio/audio_apitest.cc",
     "api/bluetooth_socket/bluetooth_socket_apitest.cc",
@@ skipping 159 matching lines @@
     "//net:test_support",
     "//third_party/leveldatabase",
     "//third_party/zlib:zip",
   ]
 
   if (is_chromeos) {
     sources += [ "api/webcam_private/visca_webcam_unittest.cc" ]
     deps += [ "//chromeos:test_support" ]
   }
 }