Revert of Make task manager memory data more efficient and meaningful.

chrome/chrome_browser.gypi

 # Copyright 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': {
     # All .cc, .h, .m, and .mm files under browser except for:
     # * tests and mocks.
     # * code below browser/chromeos
     # * code below browser/extensions
@@ skipping 665 matching lines @@
       'browser/prerender/prerender_message_filter.cc',
       'browser/prerender/prerender_message_filter.h',
       'browser/prerender/prerender_origin.cc',
       'browser/prerender/prerender_origin.h',
       'browser/prerender/prerender_resource_throttle.cc',
       'browser/prerender/prerender_resource_throttle.h',
       'browser/prerender/prerender_tab_helper.cc',
       'browser/prerender/prerender_tab_helper.h',
       'browser/prerender/prerender_util.cc',
       'browser/prerender/prerender_util.h',
-      'browser/private_working_set_snapshot.h',
-      'browser/private_working_set_snapshot_win.cc',
       'browser/process_info_snapshot.h',
       'browser/process_info_snapshot_mac.cc',
       'browser/process_resource_usage.cc',
       'browser/process_resource_usage.h',
       'browser/process_singleton.h',
       'browser/process_singleton_win.cc',
       'browser/push_messaging/push_messaging_app_identifier.cc',
       'browser/push_messaging/push_messaging_app_identifier.h',
       'browser/push_messaging/push_messaging_constants.cc',
       'browser/push_messaging/push_messaging_constants.h',
@@ skipping 3354 matching lines @@
           'variables': {
             'proto_in_dir': 'browser/sync_file_system/drive_backend',
             'proto_out_dir': 'chrome/browser/sync_file_system/drive_backend',
           },
           'includes': [ '../build/protoc.gypi' ]
         },
       ],
     },],
   ],
 }