Update view_manager and window_manager to make use of content handling.

mojo/mojo_services.gypi

 # Copyright (c) 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.
 
 {
   'targets': [
     {
       'target_name': 'mojo_html_viewer',
       'type': 'loadable_module',
       'dependencies': [
         '../net/net.gyp:net',
         '../skia/skia.gyp:skia',
         '../third_party/WebKit/public/blink.gyp:blink',
         '../ui/native_theme/native_theme.gyp:native_theme',
         '../url/url.gyp:url_lib',
         'mojo_base.gyp:mojo_common_lib',
         'mojo_base.gyp:mojo_cpp_bindings',
         'mojo_base.gyp:mojo_utility',
         'mojo_base.gyp:mojo_application_chromium',
+        'mojo_content_handler_bindings',
         'mojo_navigation_bindings',
         'mojo_network_bindings',
         'mojo_launcher_bindings',
         'mojo_view_manager_lib',
         '<(mojo_system_for_loadable_module)',
       ],
       'include_dirs': [
         'third_party/WebKit'
       ],
       'sources': [
@@ skipping 868 matching lines @@
               'dependencies': [
                 '../ui/gfx/x/gfx_x11.gyp:gfx_x11',
               ],
             }],
           ],
         },
       ],
     }],
   ],
 }