Revert "Revert "Make Safari tests more robust.""

tools/bots/compiler.py

 #!/usr/bin/python
 
 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 """
 Dart2js buildbot steps
 
 Runs tests for the  dart2js compiler.
@@ skipping 184 matching lines @@
                 '--use-sdk',
                 '--report',
                 '--write-debug-log',
                 '--write-test-outcome-log'])
 
     if user_test == 'yes':
       cmd.append('--progress=color')
     else:
       cmd.extend(['--progress=buildbot', '-v'])
 
-    cmd.append('--clear_browser_cache')
+    cmd.append('--reset-browser-configuration')
 
     global IsFirstTestStepCall
     if IsFirstTestStepCall:
       IsFirstTestStepCall = False
     else:
       cmd.append('--append_logs')
 
     if flags:
       cmd.extend(flags)
     cmd.extend(targets)
@@ skipping 195 matching lines @@
     if build_info.mode == 'debug':
       target = 'dart2js_bot_debug'
     args = [sys.executable, './tools/build.py', '--mode=' + build_info.mode,
             '--arch=' + build_info.arch, target]
     print 'Build SDK and d8: %s' % (' '.join(args))
     bot.RunProcess(args)
 
 
 if __name__ == '__main__':
   bot.RunBot(GetBuildInfo, RunCompilerTests, build_step=BuildCompiler)