Remove trychange.RunCommand and replace it by gclient_utils.CheckCall.

gclient_utils.py

 # Copyright 2009 Google Inc.  All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
 #      http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
 """Generic utils."""
 
 import errno
 import os
 import re
 import stat
 import subprocess
 import sys
 import time
 import xml.dom.minidom
 import xml.parsers.expat
 
 
+class CheckCallError(OSError):
+  """CheckCall() returned non-0."""
+  def __init__(self, command, cwd, retcode, stdout):
+    OSError.__init__(self, command, cwd, retcode, stdout)
+    self.command = command
+    self.cwd = cwd
+    self.retcode = retcode
+    self.stdout = stdout
+
+
+def CheckCall(command, cwd=None):
+  """Like subprocess.check_call() but returns stdout.
+
+  Works on python 2.4
+  """
+  process = subprocess.Popen(command, cwd=cwd,
+                             shell=sys.platform.startswith('win'),
+                             stdout=subprocess.PIPE)
+  output = process.communicate()[0]
+  if process.retcode:
+    raise CheckCallError(command, cwd, process.retcode, output)
+  return output
+
+
 def SplitUrlRevision(url):
   """Splits url and returns a two-tuple: url, rev"""
   if url.startswith('ssh:'):
     # Make sure ssh://test@example.com/test.git@stable works
     regex = r"(ssh://(?:[\w]+@)?[-\w:\.]+/[-\w\./]+)(?:@(.+))?"
     components = re.search(regex, url).groups()
   else:
     components = url.split("@")
     if len(components) == 1:
       components += [None]
@@ skipping 231 matching lines @@
     raise Error(msg)
 
 
 def IsUsingGit(root, paths):
   """Returns True if we're using git to manage any of our checkouts.
   |entries| is a list of paths to check."""
   for path in paths:
     if os.path.exists(os.path.join(root, path, '.git')):
       return True
   return False