First pass performance try bot.

tools/bisect_utils.py

 # 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.
 
 """Set of operations/utilities related to checking out the depot, and
 outputting annotations on the buildbot waterfall. These are intended to be
 used by the bisection scripts."""
 
 import errno
 import os
@@ skipping 71 matching lines @@
 
 def OutputAnnotationStepClosed():
   """Outputs appropriate annotation to signal the closing of a step to
   a trybot."""
   print
   print '@@@STEP_CLOSED@@@'
   print
   sys.stdout.flush()
 
 
+def OutputAnnotationStepLink(label, url):
+  """Outputs appropriate annotation to print a link.
+
+  Args:
+    label: The name to print.
+    url: The url to print.
+  """
+  print
+  print '@@@STEP_LINK@%s@%s@@@' % (label, url)
+  print
+  sys.stdout.flush()
+
+
 def CreateAndChangeToSourceDirectory(working_directory):
   """Creates a directory 'bisect' as a subdirectory of 'working_directory'.  If
   the function is successful, the current working directory will change to that
   of the new 'bisect' directory.
 
   Returns:
     True if the directory was successfully created (or already existed).
   """
   cwd = os.getcwd()
   os.chdir(working_directory)
@@ skipping 351 matching lines @@
     print 'Error: Could not create bisect directory.'
     print
     return 1
 
   if not SetupGitDepot(opts, custom_deps):
     print 'Error: Failed to grab source.'
     print
     return 1
 
   return 0