media: Support MojoRendererService in the browser process.

content/renderer/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("//content/renderer/renderer.gni")
 import("//media/media_options.gni")
 
 source_set("renderer") {
@@ skipping 169 matching lines @@
   }
 
   if (enable_browser_cdms) {
     sources += [
       "media/crypto/proxy_media_keys.cc",
       "media/crypto/proxy_media_keys.h",
       "media/crypto/renderer_cdm_manager.cc",
       "media/crypto/renderer_cdm_manager.h",
     ]
   }
+
+  if (enable_media_mojo_renderer) {
+    sources += [
+      "media/media_renderer_service_provider.cc",
+      "media/media_renderer_service_provider.h",
+    ]
+    deps += [ "//media/mojo/services:renderer_proxy" ]
+  }
 }