Straightens outs DEPS in mojo/common

mojo/application/public/cpp/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.
 
 # GYP version: mojo/mojo_base.gyp:mojo_application_base
 source_set("cpp") {
   public_deps = [
     ":sources",
     ":init_commandline",
   ]
@@ skipping 30 matching lines @@
     "lib/service_registry.h",
     "service_connector.h",
     "service_provider_impl.h",
   ]
 
   deps = [
     "//base",
     "//mojo/application/public/interfaces",
     "//mojo/common",
     "//mojo/environment:chromium",
+    "//mojo/message_pump",
     "//third_party/mojo/src/mojo/public/cpp/bindings",
     "//third_party/mojo/src/mojo/public/cpp/system",
   ]
 }
 
 source_set("init_commandline") {
   sources = [
     "lib/init_commandline.cc",
   ]
 }
 
 source_set("content_handler") {
   sources = [
     "content_handler_factory.h",
     "lib/content_handler_factory.cc",
   ]
   deps = [
     ":cpp",
 
     # TODO: this code should not depend on base.
     "//base",
     "//mojo/application/public/interfaces:interfaces_cpp_sources",
-
-    # TODO: this code should not depend on mojo/common.
-    "//mojo/common:common_base",
+    "//mojo/message_pump",
     "//mojo/services/network/public/interfaces",
   ]
 }
 
 source_set("test_support") {
   testonly = true
   sources = [
     "application_test_base.h",
     "lib/application_test_base.cc",
     "lib/application_test_main.cc",
@@ skipping 11 matching lines @@
   ]
 
   data_deps = []
   if (is_android) {
     data_deps += [ "//mojo/android" ]
   }
   if (!is_component_build) {
     data_deps += [ "//mojo/runner" ]
   }
 }