GTTF: Flip test launcher defaults (developer mode is now default)

chrome/sync_integration_tests.isolate

 # 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.
 {
   'conditions': [
     ['OS=="linux"', {
       'variables': {
         'command': [
           '../testing/xvfb.py',
           '<(PRODUCT_DIR)',
           '<(PRODUCT_DIR)/sync_integration_tests<(EXECUTABLE_SUFFIX)',
+          '--test-launcher-bot-mode',
         ],
         'isolate_dependency_tracked': [
           '../testing/test_env.py',
           '../testing/xvfb.py',
           '<(PRODUCT_DIR)/chrome_100_percent.pak',
           '<(PRODUCT_DIR)/libffmpegsumo.so',
           '<(PRODUCT_DIR)/libppGoogleNaClPluginChrome.so',
           '<(PRODUCT_DIR)/locales/en-US.pak',
           '<(PRODUCT_DIR)/nacl_helper<(EXECUTABLE_SUFFIX)',
           '<(PRODUCT_DIR)/nacl_helper_bootstrap<(EXECUTABLE_SUFFIX)',
@@ skipping 23 matching lines @@
         'isolate_dependency_untracked': [
           '../tools/swarming_client/',
           '<(PRODUCT_DIR)/pyproto/',
         ],
       },
     }],
     ['OS=="mac"', {
       'variables': {
         'command': [
           '<(PRODUCT_DIR)/sync_integration_tests<(EXECUTABLE_SUFFIX)',
+          '--test-launcher-bot-mode',
         ],
         'isolate_dependency_tracked': [
           '<(PRODUCT_DIR)/ffmpegsumo.so',
         ],
         'isolate_dependency_untracked': [
           '<(PRODUCT_DIR)/Chromium Framework.framework/',
           '<(PRODUCT_DIR)/Chromium.app/',
         ],
       },
     }],
   ],
 }