Update default try job set of bots in PRESUBMIT.py.

PRESUBMIT.py

 # Copyright (c) 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.
 
 """Top-level presubmit script for Blink.
 
 See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts
 for more details about the presubmit API built into gcl.
 """
 
@@ skipping 314 matching lines @@
         json_url='http://blink-status.appspot.com/current?format=json'))
     results.extend(input_api.canned_checks.CheckChangeHasDescription(
         input_api, output_api))
     results.extend(_CheckSubversionConfig(input_api, output_api))
     return results
 
 
 def GetPreferredTryMasters(project, change):
     return {
         'tryserver.blink': {
+            'android_blink_compile_dbg': set(['defaulttests']),
+            'android_blink_compile_rel': set(['defaulttests']),
+            'android_chromium_gn_compile_rel': set(['defaulttests']),
             'linux_blink_dbg': set(['defaulttests']),
             'linux_blink_rel': set(['defaulttests']),
+            'linux_chromium_gn_rel': set(['defaulttests']),
             'mac_blink_compile_dbg': set(['defaulttests']),
             'mac_blink_rel': set(['defaulttests']),
             'win_blink_compile_dbg': set(['defaulttests']),
             'win_blink_rel': set(['defaulttests']),
         },
-        'tryserver.chromium': {
-            'blink_android_compile_dbg': set(['defaulttests']),
-            'blink_android_compile_rel': set(['defaulttests']),
-        },
         'tryserver.chromium.gpu': {
             'linux_gpu': set(['defaulttests']),
             'mac_gpu': set(['defaulttests']),
             'win_gpu': set(['defaulttests']),
         }
     }