Move IDMap back to base/ where it is needed.

chrome/chrome.gyp

 # Copyright (c) 2009 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': {
     'chromium_code': 1,
 
     # Define the common dependencies that contain all the actual
     # Chromium functionality.  This list gets pulled in below by
@@ skipping 366 matching lines @@
         'common/extensions/extension_error_reporter.h',
         'common/extensions/extension_error_utils.cc',
         'common/extensions/extension_error_utils.h',
         'common/extensions/extension_unpacker.cc',
         'common/extensions/extension_unpacker.h',
         'common/extensions/url_pattern.cc',
         'common/extensions/url_pattern.h',
         'common/extensions/user_script.cc',
         'common/extensions/user_script.h',
         'common/gfx/utils.h',
-        'common/id_map.h',
         'common/net/cookie_monster_sqlite.cc',
         'common/net/cookie_monster_sqlite.h',
         'common/net/dns.h',
         'common/net/url_request_intercept_job.cc',
         'common/net/url_request_intercept_job.h',
         'common/web_resource/web_resource_unpacker.cc',
         'common/web_resource/web_resource_unpacker.h',
         'common/app_cache/app_cache_context_impl.cc',
         'common/app_cache/app_cache_context_impl.h',
         'common/app_cache/app_cache_dispatcher.cc',
@@ skipping 3572 matching lines @@
         'browser/webdata/web_database_unittest.cc',
         'browser/window_sizer_unittest.cc',
         'common/bzip2_unittest.cc',
         'common/child_process_logging_mac_unittest.mm',
         'common/chrome_plugin_unittest.cc',
         'common/cocoa_utils_unittest.mm',
         'common/common_param_traits_unittest.cc',
         'common/extensions/extension_unittest.cc',
         'common/extensions/url_pattern_unittest.cc',
         'common/extensions/user_script_unittest.cc',
-        'common/id_map_unittest.cc',
         'common/important_file_writer_unittest.cc',
         'common/json_value_serializer_unittest.cc',
         'common/mru_cache_unittest.cc',
         'common/net/url_util_unittest.cc',
         'common/notification_service_unittest.cc',
         'common/pref_member_unittest.cc',
         'common/pref_service_unittest.cc',
         'common/property_bag_unittest.cc',
         'common/resource_dispatcher_unittest.cc',
         'common/time_format_unittest.cc',
@@ skipping 213 matching lines @@
           'dependencies': [
             '../views/views.gyp:views',
           ],
         }],
       ],
     },
     {
       # Provides a syncapi dynamic library target from checked-in binaries,
       # or from compiling a stub implementation.
       'target_name': 'syncapi',
-      
+
       'conditions': [
         ['chrome_personalization==0', {
           # Empty target.
           'type': 'none',
         }],
         ['chrome_personalization==1 and use_syncapi_stub==1', {
           # Build a stub library.
           'type': 'shared_library',
           'defines': [
             'COMPILING_SYNCAPI_LIBRARY'
@@ skipping 1415 matching lines @@
               # Use outputs of this action as inputs for the main target build.
               # Seems as a misnomer but makes this happy on Linux (scons).
               'process_outputs_as_sources': 1,
             },
           ],  # 'actions'
         },
       ]
     }],
   ],  # 'conditions'
 }