Run nanobench on perf bots.

slave/skia_slave_scripts/run_nanobench.py

+#!/usr/bin/env python

[borenet, 2014/07/14 19:55:01]

Same comment as in https://codereview.chromium.org/395443002:

We'll also need to add 'nanobench' to the list in
https://skia.googlesource.com/buildbot/+/master/slave/skia_slave_scripts/flav...,
line 97.

+# Copyright (c) 2014 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 benchmarking executable."""
+
+import os
+import sys
+
+from build_step import BuildStep
+from utils import gclient_utils
+
+class RunNanobench(BuildStep):
+  """A BuildStep that runs nanobench."""
+
+  def __init__(self, timeout=9600, no_output_timeout=9600, **kwargs):
+    super(RunBench, self).__init__(timeout=timeout,
+                                   no_output_timeout=no_output_timeout,
+                                   **kwargs)
+
+  def _JSONPath(self):
+    git_timestamp = gclient_utils.GetGitRepoPOSIXTimestamp()
+    return os.path.join(
+            self._device_dirs.PerfDir(),
+            'nanobench_%s_%s.json' % ( self._got_revision, git_timestamp))
+
+  def _Run(self):
+    args = ['-i', self._device_dirs.ResourceDir()]
+    if self._perf_data_dir:
+      args.extend(['--outResultsFile', self._JSONPath()])
+    self._flavor_utils.RunFlavoredCmd('nanobench', args)
+
+
+if '__main__' == __name__:
+  sys.exit(BuildStep.RunBuildStep(RunNanobench))