Files that are in src/ui/base should be compiled into libui_base.a.

tools/memory_watcher/memory_watcher.gyp

-# Copyright (c) 2009 The Chromium Authors. All rights reserved.
+# Copyright (c) 2011 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': 'memory_watcher',
       'type': 'shared_library',
       'msvs_guid': '3BD81303-4E14-4559-AA69-B30C3BAB08DD',
       'dependencies': [
-        '../../app/app.gyp:app_base',
         '../../base/base.gyp:base',
+        '../../ui/ui.gyp:ui_base',
       ],
       'defines': [
         'BUILD_MEMORY_WATCHER',
       ],
       'include_dirs': [
         '../..',
         '<(DEPTH)/third_party/wtl/include',
       ],
       'sources': [
         'call_stack.cc',
@@ skipping 13 matching lines @@
       ],
     },
   ],
 }
 
 # Local Variables:
 # tab-width:2
 # indent-tabs-mode:nil
 # End:
 # vim: set expandtab tabstop=2 shiftwidth=2: