Remove Mojo bindings environment.

media/mojo/common/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("//testing/test.gni")
 
 # Target naming conventions:
 # - unittests: Unit tests for a particular class/file.
 
 source_set("common") {
   sources = [
     "media_type_converters.cc",
     "media_type_converters.h",
     "mojo_shared_buffer_video_frame.cc",
     "mojo_shared_buffer_video_frame.h",
   ]
 
   deps = [
     "//base",
     "//media",
     "//media/mojo/interfaces",
     "//mojo/common",
     "//mojo/converters/geometry",
-    "//mojo/environment:chromium",
     "//mojo/public/c/system:for_component",
     "//ui/gfx/geometry",
     "//ui/mojo/geometry:interfaces",
   ]
 }
 
 test("media_mojo_unittests") {
   sources = [
     "media_type_converters_unittest.cc",
     "mojo_shared_buffer_video_frame_unittest.cc",
   ]
 
   deps = [
     ":common",
     "//base",
     "//base/test:test_support",
     "//media",
     "//media/base:test_support",
     "//media/mojo/interfaces",
     "//mojo/edk/system",
     "//mojo/edk/test:run_all_unittests",
-    "//mojo/environment:chromium",
     "//testing/gmock",
     "//testing/gtest",
   ]
 }
 
 group("tests") {
   testonly = true
   deps = [
     ":media_mojo_unittests",
   ]
 }