Fix ninja "multiple rules" warning.

base/base.gyp

 # Copyright (c) 2012 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'includes': [
     '../build/win_precompile.gypi',
@@ skipping 1363 matching lines @@
           'target_name': 'base_java_application_state',
           'type': 'none',
           'variables': {
             'source_file': 'android/application_status_listener.h',
           },
           'includes': [ '../build/android/java_cpp_enum.gypi' ],
         },
         {
           # GN: //base:base_android_java_enums_srcjar
           'target_name': 'base_java_library_load_from_apk_status_codes',
-          'toolsets': ['host', 'target'],
           'type': 'none',
           'variables': {
             'source_file': 'android/library_loader/library_load_from_apk_status_codes.h'
           },
           'includes': [ '../build/android/java_cpp_enum.gypi' ],
         },
         {
           # GN: //base:base_android_java_enums_srcjar
           'target_name': 'base_java_memory_pressure_level',
           'type': 'none',
@@ skipping 114 matching lines @@
               'dependencies': [
                 '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
               ],
             }],
           ],
         },
       ],
     }],
   ],
 }