Access environment variables through Host object instead of directly.

third_party/WebKit/Tools/Scripts/webkitpy/common/host.py

 # Copyright (c) 2010 Google Inc. All rights reserved.
 # Copyright (c) 2009 Apple Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
@@ skipping 10 matching lines @@
 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 import logging
-import os
 import sys
 
 from webkitpy.common.checkout.scm.detection import SCMDetector
 from webkitpy.common.config.builders import BUILDERS
 from webkitpy.common.net.buildbot import BuildBot
 from webkitpy.common.net import web
 from webkitpy.common.system.systemhost import SystemHost
 from webkitpy.layout_tests.builder_list import BuilderList
 from webkitpy.layout_tests.port.factory import PortFactory
 
@@ skipping 24 matching lines @@
 
     # We call this from the Host constructor, as it's one of the
     # earliest calls made for all webkitpy-based programs.
     def _engage_awesome_locale_hacks(self):
         # To make life easier on our non-English users, we override
         # the locale environment variables inside webkitpy.
         # If we don't do this, programs like SVN will output localized
         # messages and svn.py will fail to parse them.
         # FIXME: We should do these overrides *only* for the subprocesses we know need them!
         # This hack only works in unix environments.
-        os.environ['LANGUAGE'] = 'en'
-        os.environ['LANG'] = 'en_US.UTF-8'
-        os.environ['LC_MESSAGES'] = 'en_US.UTF-8'
-        os.environ['LC_ALL'] = ''
+        self.environ['LANGUAGE'] = 'en'
+        self.environ['LANG'] = 'en_US.UTF-8'
+        self.environ['LC_MESSAGES'] = 'en_US.UTF-8'
+        self.environ['LC_ALL'] = ''
 
     # FIXME: This is a horrible, horrible hack for WinPort and should be removed.
     # Maybe this belongs in Git in some more generic "find the git binary" codepath?
     # Or possibly Executive should have a way to emulate shell path-lookups?
     # FIXME: Unclear how to test this, since it currently mutates global state on Git.
     def _engage_awesome_windows_hacks(self):
         try:
             self.executive.run_command(['git', 'help'])
         except OSError as e:
             try:
@@ skipping 22 matching lines @@
 
     def scm(self):
         return self._scm
 
     def scm_for_path(self, path):
         # FIXME: make scm() be a wrapper around this, and clean up the way
         # callers call initialize_scm() (to remove patch_directories) and scm().
         if sys.platform == "win32":
             self._engage_awesome_windows_hacks()
         return SCMDetector(self.filesystem, self.executive).detect_scm_system(path)