Use --resetGpuContext flag when running GM on Xoom

slave/skia_slave_scripts/run_gm.py

 #!/usr/bin/env python
 # 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.
 
 """ Run the Skia GM executable. """
 
 from build_step import BuildStep
 import build_step
 import os
@@ skipping 50 matching lines @@
 
     device_gm_expectations_path = self._flavor_utils.DevicePathJoin(
         self._device_dirs.GMExpectedDir(), build_step.GM_EXPECTATIONS_FILENAME)
     if self._flavor_utils.DevicePathExists(device_gm_expectations_path):
       cmd.extend(['--readPath', device_gm_expectations_path])
 
     additional_tests_to_ignore = self._GetAdditionalTestsToIgnore()
     if additional_tests_to_ignore:
       cmd.extend(['--ignoreTests'] + additional_tests_to_ignore)
 
-    # msaa16 is flaky on Macs (driver bug?) so we skip the test for now
+    if 'Xoom' in self._builder_name:
+      # The Xoom's GPU will crash on some tests if we don't use this flag.
+      # http://code.google.com/p/skia/issues/detail?id=1434
+      cmd.append('--resetGpuContext')
     if sys.platform == 'darwin':
+      # msaa16 is flaky on Macs (driver bug?) so we skip the test for now
       cmd.extend(['--config', 'defaults', '~msaa16'])
     elif ('RazrI' in self._builder_name or
           'Nexus10' in self._builder_name or
           'GalaxyNexus' in self._builder_name or
           'Nexus4' in self._builder_name):
       cmd.extend(['--config', 'defaults', 'msaa4'])
     elif (not 'NoGPU' in self._builder_name and
           not 'ChromeOS' in self._builder_name):
       cmd.extend(['--config', 'defaults', 'msaa16'])
     self._flavor_utils.RunFlavoredCmd('gm', cmd)
 
 
 if '__main__' == __name__:
   sys.exit(BuildStep.RunBuildStep(RunGM))