Split file_observers.h into three files for each class

webkit/storage_browser.gyp

 # Copyright 2013 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': 'webkit_storage_browser',
       'type': '<(component)',
       'variables': { 'enable_wexit_time_destructors': 1, },
@@ skipping 80 matching lines @@
         'browser/fileapi/async_file_util.h',
         'browser/fileapi/async_file_util_adapter.cc',
         'browser/fileapi/async_file_util_adapter.h',
         'browser/fileapi/copy_or_move_file_validator.h',
         'browser/fileapi/copy_or_move_operation_delegate.cc',
         'browser/fileapi/copy_or_move_operation_delegate.h',
         'browser/fileapi/dragged_file_util.cc',
         'browser/fileapi/dragged_file_util.h',
         'browser/fileapi/external_mount_points.cc',
         'browser/fileapi/external_mount_points.h',
-        'browser/fileapi/file_observers.h',
+        'browser/fileapi/file_access_observer.h',
+        'browser/fileapi/file_change_observer.h',
         'browser/fileapi/file_permission_policy.h',
         'browser/fileapi/file_stream_writer.h',
         'browser/fileapi/file_system_backend.h',
         'browser/fileapi/file_system_context.cc',
         'browser/fileapi/file_system_context.h',
         'browser/fileapi/file_system_dir_url_request_job.cc',
         'browser/fileapi/file_system_dir_url_request_job.h',
         'browser/fileapi/file_system_file_stream_reader.cc',
         'browser/fileapi/file_system_file_stream_reader.h',
         'browser/fileapi/file_system_file_util.cc',
@@ skipping 11 matching lines @@
         'browser/fileapi/file_system_quota_client.h',
         'browser/fileapi/file_system_quota_util.h',
         'browser/fileapi/file_system_url.cc',
         'browser/fileapi/file_system_url.h',
         'browser/fileapi/file_system_url_request_job.cc',
         'browser/fileapi/file_system_url_request_job.h',
         'browser/fileapi/file_system_url_request_job_factory.cc',
         'browser/fileapi/file_system_url_request_job_factory.h',
         'browser/fileapi/file_system_usage_cache.cc',
         'browser/fileapi/file_system_usage_cache.h',
+        'browser/fileapi/file_update_observer.h',
         'browser/fileapi/file_writer_delegate.cc',
         'browser/fileapi/file_writer_delegate.h',
         'browser/fileapi/isolated_context.cc',
         'browser/fileapi/isolated_context.h',
         'browser/fileapi/isolated_file_system_backend.cc',
         'browser/fileapi/isolated_file_system_backend.h',
         'browser/fileapi/local_file_stream_writer.cc',
         'browser/fileapi/local_file_stream_writer.h',
         'browser/fileapi/local_file_util.cc',
         'browser/fileapi/local_file_util.h',
@@ skipping 70 matching lines @@
         'browser/fileapi/dump_file_system.cc',
       ],
       'dependencies': [
         '<(DEPTH)/base/base.gyp:base',
         '<(DEPTH)/webkit/storage_common.gyp:webkit_storage_common',
         'webkit_storage_browser',
       ],
     },
   ],
 }