Make all the rest of the recipes explicitly specify GIT_MODE

scripts/slave/recipe_modules/emulator/example.py

 # Copyright 2015 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.
 
 from recipe_engine import recipe_api
 from recipe_engine.recipe_api import Property
 from recipe_engine.types import freeze
 
 DEPS = [
   'depot_tools/bot_update',
@@ skipping 35 matching lines @@
 def RunSteps(api, mastername, buildername):
   builder = BUILDERS[mastername][buildername]
   api.chromium_android.configure_from_properties(
       builder['config'],
       REPO_NAME='src',
       REPO_URL=REPO_URL,
       INTERNAL=False,
       BUILD_CONFIG=builder['target'])
 
   api.emulator.set_config('base_config')
-  api.gclient.set_config('chromium')
+  api.gclient.set_config('chromium', GIT_MODE=True)
   api.gclient.apply_config('android')
 
   api.bot_update.ensure_checkout()
   api.chromium.runhooks()
 
   api.emulator.install_emulator_deps(api_level=builder.get('api_level'))
 
   provision_settings = builder.get('provision_provision_settings', {})
 
   with api.emulator.launch_emulator(
@@ skipping 11 matching lines @@
   sanitize = lambda s: ''.join(c if c.isalnum() else '_' for c in s)
 
   for mastername in BUILDERS:
     master = BUILDERS[mastername]
     for buildername in master:
       yield (
           api.test('%s_test_basic' % sanitize(buildername)) +
           api.properties.generic(
               buildername=buildername,
               mastername=mastername))