Make Buildbot masters send ts_mon metrics, and add standard HTTP server metrics.

scripts/common/env.py

 #!/usr/bin/env python
 # 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.
 
 """Implements a standard mechanism for Chrome Infra Python environment setup.
 
 This library provides a central location to define Chrome Infra environment
 setup. It also provides several faculties to install this environment.
 
@@ skipping 47 matching lines @@
 def path_if(*args):
   if not all(args):
     return None
   path = os.path.abspath(os.path.join(*args))
   return (path) if os.path.exists(path) else (None)
 
 # The path to the <build> directory in which this script resides.
 Build = path_if(os.path.dirname(__file__), os.pardir, os.pardir)
 # The path to the <build_internal> directory.
 BuildInternal = path_if(Build, os.pardir, 'build_internal')
+Infra = path_if(Build, os.pardir, 'infra')
 
 
 def SetPythonPathEnv(value):
   """Sets the system's PYTHONPATH environemnt variable.
 
   Args:
     value (str): The value to use. If this is empty/None, the system's
         PYTHONPATH will be cleared.
   """
   # Since we can't assign None to the environment "dictionary", we have to
@@ skipping 286 matching lines @@
     - The system python path.
 
   Args:
     hermetic (bool): True, prune any non-system path from the system path.
     master_dir (str): If not None, include a master path component.
   """
   path = PythonPath()
   if master_dir:
     path += GetMasterPythonPath(master_dir)
   path += GetBuildPythonPath()
+  path += Infra
   path += GetSysPythonPath(hermetic=hermetic)
   return path
 
 
 def _InfraPathFromArgs(args):
   """Returns (PythonPath): A PythonPath populated from command-line arguments.
 
   Args:
     args (argparse.Namespace): The command-line arguments constructed by 'main'.
   """
@@ skipping 53 matching lines @@
   # Parse
   args = parser.parse_args()
 
   # Execute our subcommand function, which will return the exit code.
   path = _InfraPathFromArgs(args)
   return args.func(args, path)
 
 
 if __name__ == '__main__':
   sys.exit(main())