fileSystemProvider: First cut at implementing fileSystemProvider API

chrome/common/extensions/api/api.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.
 
 {
   'targets': [
     {
       'target_name': 'api',
       'type': 'static_library',
       'sources': [
@@ skipping 52 matching lines @@
               'echo_private.json',
               'enterprise_platform_keys_private.json',
               'events.json',
               'experimental_accessibility.json',
               'experimental_discovery.idl',
               'experimental_history.json',
               'experimental_identity.idl',
               'feedback_private.idl',
               'file_browser_private.json',
               'file_system.idl',
+              'file_system_provider.idl',
               'font_settings.json',
               'hangouts_private.idl',
               'history.json',
               'i18n.json',
               'identity.idl',
               'identity_private.idl',
               'idle.json',
               'image_writer_private.idl',
               'input_ime.json',
               'location.idl',
@@ skipping 94 matching lines @@
       'conditions': [
         ['chromeos==1', {
           'dependencies': [
             '<(DEPTH)/chrome/chrome.gyp:drive_proto',
           ],
         }],
       ],
     },
   ],
 }