Remove MOJO_SHELL_CLIENT define.

chrome/browser/chromeos/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("//build/config/ui.gni")
 import("//chrome/chrome_tests.gni")
 import("//media/media_options.gni")
 import("//third_party/protobuf/proto_library.gni")
 
@@ skipping 115 matching lines @@
     "//ui/keyboard:mojom",
     "//ui/message_center",
     "//ui/surface",
     "//ui/views",
     "//ui/views/controls/webview",
     "//ui/web_dialogs",
     "//url",
     "//v8",
   ]
 
-  defines = [ "MOJO_SHELL_CLIENT" ]
-
   sources = rebase_path(gypi_values.browser_chromeos_sources, ".", "//chrome") +
             rebase_path(gypi_values.browser_chromeos_extension_sources,
                         ".",
                         "//chrome")
   sources += [
     "chrome_interface_factory.cc",
     "chrome_interface_factory.h",
   ]
   if (use_x11) {
     configs += [ "//build/config/linux:x11" ]
@@ skipping 14 matching lines @@
       "events/system_key_event_listener.cc",
       "events/system_key_event_listener.h",
       "events/xinput_hierarchy_changed_event_listener.cc",
       "events/xinput_hierarchy_changed_event_listener.h",
       "system/input_device_settings_impl_x11.cc",
       "system_logs/touch_log_source_x11.cc",
     ]
   }
 
   if (use_cras) {
-    defines += [ "USE_CRAS" ]
+    defines = [ "USE_CRAS" ]
   }
 
   if (ui_compositor_image_transport) {
     deps += [ "//ui/gl" ]
   }
 }
 
 source_set("unit_tests") {
   testonly = true
 
@@ skipping 37 matching lines @@
     "policy/proto/install_attributes.proto",
   ]
 }
 
 proto_library("attestation_proto") {
   sources = [
     "attestation/attestation_key_payload.proto",
     "attestation/attestation_signed_data.proto",
   ]
 }