Add mash shelf application id support.

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 88 matching lines @@
     "//ui/accessibility",
     "//url/ipc:url_ipc",
   ]
   deps = [
     "//ipc",
     "//ipc/mojo",
     "//media",
     "//mojo/common",
     "//net",
     "//ppapi/c",
+    "//services/shell/public/cpp",
     "//skia",
     "//storage/common",
     "//third_party/WebKit/public:blink_headers",
     "//third_party/icu",
     "//ui/accessibility",
     "//ui/base",
     "//ui/gfx",
     "//ui/gfx/ipc",
     "//ui/gfx/ipc/skia",
     "//ui/surface",
@@ skipping 33 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",
   ]
 }