Presubmit change to add android trybots when needed.

build/all_android.gyp

 # 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.
 
 # This is all.gyp file for Android to prevent breakage in Android and other
 # platform; It will be churning a lot in the short term and eventually be merged
 # into all.gyp.
 
 {
   'targets': [
     {
       'target_name': 'All',
       'type': 'none',
       'dependencies': [
         'util/build_util.gyp:*',
         'android_builder_tests',
       ],
     }, # target_name: All
     {
       # The current list of tests for android.  This is temporary
       # until the full set supported.  If adding a new test here,
       # please also add it to build/android/run_tests.py, else the
       # test is not run.
+      #
+      # WARNING:
+      # Do not add targets here without communicating the implications
+      # on tryserver triggers and load.  Discuss with jrg please.
       'target_name': 'android_builder_tests',
       'type': 'none',
       'dependencies': [
         '../base/base.gyp:base_unittests',
         '../sql/sql.gyp:sql_unittests',
         '../ipc/ipc.gyp:ipc_tests',
         '../net/net.gyp:net_unittests',
         # From here down: not added to run_tests.py yet.
         '../jingle/jingle.gyp:jingle_unittests',
       ],
@@ skipping 17 matching lines @@
       'type': 'none',
       'dependencies': [
         '../content/content.gyp:content_browsertests',
         '../content/content.gyp:content_unittests',
         '../chrome/chrome.gyp:sync_unit_tests',
         '../ui/ui.gyp:gfx_unittests',
       ],
     },
   ],  # targets
 }