ContentHandler -> ShellClientFactory

mojo/shell/public/interfaces/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("//mojo/public/tools/bindings/mojom.gni")
 
 # GYP version: mojo/mojo_base.gyp:mojo_application_bindings
 mojom("interfaces") {
   sources = [
     "application_manager.mojom",
-    "content_handler.mojom",
     "interface_provider.mojom",
     "shell.mojom",
     "shell_client.mojom",
+    "shell_client_factory.mojom",
   ]
 
   import_dirs = [ "//mojo/services" ]
 
   deps = [
     "//mojo/services/network/public/interfaces",
   ]
 }