Extracted shell_interfaces and shell_public into a separate gyp file.

content/content_common_mojo_bindings.gyp

 # 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.
 
 {
   'targets': [
     {
       # GN version: //content/common:mojo_bindings
       'target_name': 'content_common_mojo_bindings_mojom',
       'type': 'none',
@@ skipping 16 matching lines @@
           'public/common/service_worker_event_status.mojom',
         ],
         'mojom_typemaps': [
           '../url/mojo/gurl.typemap',
           '../url/mojo/origin.typemap',
         ],
       },
       'dependencies': [
         '../components/leveldb/leveldb.gyp:leveldb_bindings_mojom',
         '../mojo/mojo_public.gyp:mojo_cpp_bindings',
-        '../services/shell/shell.gyp:shell_public',
+        '../services/shell/shell_public.gyp:shell_public',
         '../skia/skia.gyp:skia_mojo',
         '../third_party/WebKit/public/blink.gyp:mojo_bindings',
         '../ui/mojo/geometry/mojo_bindings.gyp:mojo_geometry_bindings',
       ],
       'includes': [ '../mojo/mojom_bindings_generator_explicit.gypi' ],
     },
     {
       'target_name': 'content_common_mojo_bindings',
       'type': 'static_library',
       'variables': {
         'enable_wexit_time_destructors': 1,
       },
       'dependencies': [
         '../url/url.gyp:url_mojom',
         'content_common_mojo_bindings_mojom',
       ],
       'export_dependent_settings': [
         '../url/url.gyp:url_mojom',
       ],
     },
   ]
 }