Slow Reports: Set a minimum time in between reports, and check for OTR sessions

chrome/chrome_tests.gypi

 # 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.
 {
   'variables': {
     'chrome_browser_extensions_test_support_sources': [
       # A list of sources which is shared between different browser tests.
       'browser/apps/app_browsertest_util.cc',
       'browser/apps/app_browsertest_util.h',
       'browser/extensions/browsertest_util.cc',
@@ skipping 393 matching lines @@
       'browser/sync_file_system/mock_local_change_processor.cc',
       'browser/sync_file_system/mock_local_change_processor.h',
       'browser/sync_file_system/mock_remote_file_sync_service.cc',
       'browser/sync_file_system/mock_remote_file_sync_service.h',
       'browser/tab_contents/view_source_browsertest.cc',
       'browser/task_management/providers/web_contents/background_contents_tag_browsertest.cc',
       'browser/task_manager/task_manager_browsertest.cc',
       'browser/task_manager/task_manager_browsertest_util.cc',
       'browser/task_manager/task_manager_browsertest_util.h',
       'browser/themes/theme_service_browsertest.cc',
+      'browser/tracing/chrome_tracing_delegate_browsertest.cc',
       'browser/translate/cld_data_harness.cc',
       'browser/translate/cld_data_harness.h',
       'browser/translate/cld_data_harness_factory.cc',
       'browser/translate/cld_data_harness_factory.h',
       'browser/translate/component_cld_data_harness.cc',
       'browser/translate/component_cld_data_harness.h',
       'browser/translate/standalone_cld_data_harness.cc',
       'browser/translate/standalone_cld_data_harness.h',
       'browser/translate/translate_browsertest.cc',
       'browser/translate/translate_manager_browsertest.cc',
@@ skipping 2865 matching lines @@
             ['enable_webrtc==1', {
               'dependencies': [
                 '../third_party/libjingle/libjingle.gyp:libjingle_webrtc'
               ]
             }],
           ],
         }]
     }],
   ],  # 'conditions'
 }