Define MOJO_SHELL_CLIENT uniformly across content

content/public/common/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("//content/common/common.gni")
 import("//mojo/public/tools/bindings/mojom.gni")
 
 # See //content/BUILD.gn for how this works.
 group("common") {
@@ skipping 26 matching lines @@
 }
 
 # Forces static linking for targets using the static_switches constants, even
 # in the component build. This config makes it impossible to use the static
 # switches target and use the rest of content at the same time, because the
 # component export flags won't be consistent.
 config("static_switches_defines") {
   defines = [ "COMPILE_CONTENT_STATICALLY" ]
 }
 
+# Set in GN builds, triggering behavior in content when run from an external
+# Mojo shell.
+config("mojo_shell_client") {
+  # This configuration has only been tested on these platforms.
+  if (is_win || is_linux || is_chromeos) {
+    defines = [ "MOJO_SHELL_CLIENT" ]
+  }
+}
+
 # This target allows you to use the content_switches constants and statically
 # link to it, without depending on the rest of content. This is only for use
 # without content, or you will get multiply defined symbols.
 source_set("static_switches") {
   public = [
     "content_switches.h",
   ]
   sources = [
     "//content/common/content_export.h",
     "content_switches.cc",
@@ skipping 45 matching lines @@
 }
 
 mojom("mojo_bindings") {
   sources = [
     "background_sync.mojom",
     "mojo_geoposition.mojom",
     "permission_status.mojom",
     "service_worker_event_status.mojom",
   ]
 }