Turn off ash and aura by default on linux blink bots.

masters/master.chromium.webkit/master_linux_webkit_latest_cfg.py

Index: masters/master.chromium.webkit/master_linux_webkit_latest_cfg.py
diff --git a/masters/master.chromium.webkit/master_linux_webkit_latest_cfg.py b/masters/master.chromium.webkit/master_linux_webkit_latest_cfg.py
index 4c8ef1b7dac9a1be05c8cdf616d400a4fca3203f..9141a4ff1e25b469d584e6c2df0505d1bc36f927 100644
--- a/masters/master.chromium.webkit/master_linux_webkit_latest_cfg.py
+++ b/masters/master.chromium.webkit/master_linux_webkit_latest_cfg.py
@@ -48,7 +48,10 @@ F('f_webkit_linux_rel', linux().ChromiumFactory(
     ],
     factory_properties={
         'archive_webkit_results': ActiveMaster.is_production_host,
-        'gclient_env': { 'GYP_GENERATORS': 'ninja' },
+        'gclient_env': {
+          'GYP_DEFINES': 'use_ash=0 use_aura=0',
+          'GYP_GENERATORS': 'ninja',
+        },
         'generate_gtest_json': True,
         'test_results_server': 'test-results.appspot.com',
         'blink_config': 'blink',
@@ -76,7 +79,10 @@ F('f_webkit_linux_rel_asan', linux().ChromiumFactory(
         'archive_webkit_results': ActiveMaster.is_production_host,
         'asan': True,
         'blink_config': 'blink',
-        'gclient_env': {'GYP_DEFINES': asan_gyp, 'GYP_GENERATORS': 'ninja'},
+        'gclient_env': {
+          'GYP_DEFINES': asan_gyp + ' use_ash=0 use_aura=0',
+          'GYP_GENERATORS': 'ninja',
+        },
         'generate_gtest_json': True,
         'gs_bucket': 'gs://webkit-asan',
         'test_results_server': 'test-results.appspot.com',
@@ -107,7 +113,10 @@ F('f_webkit_dbg_tests', linux().ChromiumFactory(
         'archive_webkit_results': ActiveMaster.is_production_host,
         'generate_gtest_json': True,
         'test_results_server': 'test-results.appspot.com',
-        'gclient_env': { 'GYP_GENERATORS': 'ninja' },
+        'gclient_env': {
+            'GYP_DEFINES': 'use_ash=0 use_aura=0',
+            'GYP_GENERATORS':'ninja',
+        },
         'blink_config': 'blink',
     }))