Use ChannelMojo from the browser to NaCl loader process.

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/buildflag_header.gni")
 import("//build/config/chromecast_build.gni")
 import("//build/config/features.gni")
 import("//content/common/common.gni")
 import("//mojo/public/tools/bindings/mojom.gni")
 import("//third_party/webrtc/build/webrtc.gni")
@@ skipping 41 matching lines @@
 config("static_switches_defines") {
   defines = [ "COMPILE_CONTENT_STATICALLY" ]
 }
 
 # 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",
+    "mojo_channel_switches.h",
   ]
   sources = [
     "//content/common/content_export.h",
     "content_switches.cc",
+    "mojo_channel_switches.cc",
   ]
 
   public_configs = [ ":static_switches_defines" ]
 }
 
 # This target allows you to use the content_features 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_features") {
   public = [
@@ skipping 87 matching lines @@
 source_set("feature_h264_with_openh264_ffmpeg") {
   deps = [
     ":features",
     "//base",
   ]
   sources = [
     "feature_h264_with_openh264_ffmpeg.cc",
     "feature_h264_with_openh264_ffmpeg.h",
   ]
 }