Straightens outs DEPS in mojo/common

mojo/environment/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_base.gyp:mojo_environment_chromium
 source_set("chromium") {
   output_name = "mojo_environment_chromium"
 
   sources = [
     "environment.cc",
@@ skipping 37 matching lines @@
   ]
 
   defines = [ "MOJO_ENVIRONMENT_IMPL_IMPLEMENTATION" ]
 
   public_configs =
       [ "//third_party/mojo/src/mojo/public/build/config:mojo_sdk" ]
 
   deps = [
     "//base",
     "//base/third_party/dynamic_annotations",
-    "//mojo/common:common_base",
+    "//mojo/message_pump",
+    "//third_party/mojo/src/mojo/public/c/system:for_component",
     "//third_party/mojo/src/mojo/public/cpp/environment:environment",
   ]
 }