Add experiments info to crash dumps.

chrome/chrome_common.gypi

 # 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': 'common',
       'type': 'static_library',
       'variables': {
@@ skipping 173 matching lines @@
         'common/mac/app_mode_common.h',
         'common/mac/app_mode_common.mm',
         'common/mac/cfbundle_blocker.h',
         'common/mac/cfbundle_blocker.mm',
         'common/mac/launchd.h',
         'common/mac/launchd.mm',
         'common/mac/objc_method_swizzle.h',
         'common/mac/objc_method_swizzle.mm',
         'common/mac/objc_zombie.h',
         'common/mac/objc_zombie.mm',
+        'common/metrics/experiments_helper.cc',
+        'common/metrics/experiments_helper.h',
         'common/metrics/histogram_sender.cc',
         'common/metrics/histogram_sender.h',
         'common/metrics/metrics_log_base.cc',
         'common/metrics/metrics_log_base.h',
         'common/metrics/metrics_log_manager.cc',
         'common/metrics/metrics_log_manager.h',
         'common/metrics/metrics_service_base.cc',
         'common/metrics/metrics_service_base.h',
         'common/multi_process_lock.h',
         'common/multi_process_lock_linux.cc',
@@ skipping 293 matching lines @@
         'common/metrics/proto/user_action_event.proto',
       ],
       'variables': {
         'proto_in_dir': 'common/metrics/proto',
         'proto_out_dir': 'chrome/common/metrics/proto',
       },
       'includes': [ '../build/protoc.gypi' ],
     },
   ],
 }