Revert "Split bundle generation steps so that API registration is generated in browser, not common."

extensions/browser/api/api_registration.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: //extensions/browser/api
-      'target_name': 'extensions_api_registration',
-      'type': 'static_library',
-      # TODO(jschuh): http://crbug.com/167187 size_t -> int
-      'msvs_disabled_warnings': [ 4267 ],
-      'includes': [
-        '../../../build/json_schema_bundle_registration_compile.gypi',
-        '../../common/api/schemas.gypi',
-      ],
-      'conditions': [
-        ['enable_extensions==1', {
-          'dependencies': [
-            '<(DEPTH)/extensions/common/api/api.gyp:extensions_api',
-            '<(DEPTH)/device/serial/serial.gyp:device_serial_mojo',
-            '<(DEPTH)/skia/skia.gyp:skia',
-          ],
-        }],
-      ],
-    },
-  ],
-}