Adding config step to output the bisect config dictionary.

scripts/slave/recipe_modules/auto_bisect/bisector.py

 # Copyright 2015 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.
 
+import json
 import re
 
 from . import bisect_results
 from . import depot_config
 
 _DEPS_SHA_PATCH = """
 diff --git DEPS.sha DEPS.sha
 new file mode 100644
 --- /dev/null
 +++ DEPS.sha
@@ skipping 10 matching lines @@
 
   def __init__(self, api, bisect_config, revision_class, init_revisions=True):
     """Initializes the state of a new bisect job from a dictionary.
 
     Note that the initial good_rev and bad_rev MUST resolve to a commit position
     in the chromium repo.
     """
     super(Bisector, self).__init__()
     self._api = api
     self.bisect_config = bisect_config
+    self.config_step()
     self.revision_class = revision_class
 
     # Test-only properties.
     # TODO: Replace these with proper mod_test_data
     self.dummy_regression_confidence = bisect_config.get(
         'dummy_regression_confidence')
     self.dummy_builds = bisect_config.get('dummy_builds', False)
 
     # Loading configuration items
     self.test_type = bisect_config.get('test_type', 'perf')
@@ skipping 19 matching lines @@
 
     # Initial revision range
     self.revisions = []
     self.bad_rev = revision_class(bisect_config['bad_revision'], self)
     self.bad_rev.bad = True
     self.good_rev = revision_class(bisect_config['good_revision'], self)
     self.good_rev.good = True
     if init_revisions:
       self._expand_revision_range()
 
+  def config_step(self):
+    """Yields a simple echo step that outputs the bisect config."""
+    api = self.api
+    # bisect_config may come as a FrozenDict (which is not serializable).
+    bisect_config = dict(self.bisect_config)
+
+    def fix_windows_backslashes(s):
+      backslash_regex = re.compile(r'(?<!\\)\\(?!\\)')
+      return backslash_regex.sub(r'\\', s)
+
+    for k, v in bisect_config.iteritems():
+      if isinstance(v, basestring):
+        bisect_config[k] = fix_windows_backslashes(v)
+    # We sort the keys to prevent problems with orders changing when
+    # recipe_simulation_test compares against expectation files.
+    api.m.step('config', ['echo', json.dumps(bisect_config, indent=2,
+                                             sort_keys=True)])
+
   @property
   def api(self):
     return self._api
 
   @staticmethod
   def _commit_pos_range(a, b):
     """Given 2 commit positions, returns a list with the ones between."""
     a, b = sorted(map(int, [a, b]))
     return xrange(a + 1, b)
 
@@ skipping 397 matching lines @@
     return 'linux_perf_tester'
 
   def get_builder_bot_for_this_platform(self):
     # TODO: Actually look at the current platform.
     return 'linux_perf_bisect_builder'
 
   def get_platform_gs_prefix(self):
     # TODO: Actually check the current platform
     return 'gs://chrome-perf/Linux Builder/full-build-linux_'