Extracted shell_interfaces and shell_public into a separate gyp file.

media/mojo/interfaces/mojo_bindings.gyp

 # Copyright 2015 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: //media/mojo/interfaces
       'target_name': 'platform_verification_mojo_bindings',
       'type': 'none',
       'sources': [
         'platform_verification.mojom',
       ],
       'includes': [ '../../../mojo/mojom_bindings_generator.gypi' ],
     },
     {
       'target_name': 'platform_verification_api',
       'type': 'static_library',
       'dependencies': [
         'platform_verification_mojo_bindings',
         '../../../mojo/mojo_public.gyp:mojo_cpp_bindings',
-        '../../../services/shell/shell.gyp:shell_public',
+        '../../../services/shell/shell_public.gyp:shell_public',
       ],
       'sources': [
         '<(SHARED_INTERMEDIATE_DIR)/media/mojo/interfaces/platform_verification.mojom.cc',
         '<(SHARED_INTERMEDIATE_DIR)/media/mojo/interfaces/platform_verification.mojom.h',
       ],
     },
     {
       # GN version: //media/mojo/interfaces
       'target_name': 'provision_fetcher_mojo_bindings',
       'type': 'none',
       'variables': {
         'mojom_files': [
           'provision_fetcher.mojom',
         ],
       },
       'includes': [ '../../../mojo/mojom_bindings_generator_explicit.gypi' ],
     },
     {
       'target_name': 'provision_fetcher_api',
       'type': 'static_library',
       'dependencies': [
         'provision_fetcher_mojo_bindings',
         '../../../mojo/mojo_public.gyp:mojo_cpp_bindings',
-        '../../../services/shell/shell.gyp:shell_public',
+        '../../../services/shell/shell_public.gyp:shell_public',
       ],
     },
   ],
 }