Set cwd to the root of the git checkout when running git svn info.

URL value is dependent on the local directory. The current directory would
affect Base URL on Rietveld otherwise.

Do not use Repository Root instead of URL since git svn clone foo -T bar
wouldn't be correctly based.

Update RunCommand() to be able to pass cwd argument.

TEST=git cl upload is broken if I break this code.
BUG=none

Review URL: http://codereview.chromium.org/6591093

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@76791 0039d316-1c4b-4281-b951-d872f2087c98

git_cl/git_cl.py

@@ -54,7 +54,7 @@ def Popen(cmd, **kwargs):
 
 
 def RunCommand(cmd, error_ok=False, error_message=None,
-               redirect_stdout=True, swallow_stderr=False):
+               redirect_stdout=True, swallow_stderr=False, **kwargs):
   if redirect_stdout:
     stdout = subprocess.PIPE
   else:
@@ -63,7 +63,7 @@ def RunCommand(cmd, error_ok=False, error_message=None,
     stderr = subprocess.PIPE
   else:
     stderr = None
-  proc = Popen(cmd, stdout=stdout, stderr=stderr)
+  proc = Popen(cmd, stdout=stdout, stderr=stderr, **kwargs)
   output = proc.communicate()[0]
   if not error_ok and proc.returncode != 0:
     DieWithError('Command "%s" failed.\n' % (' '.join(cmd)) +
@@ -808,7 +808,8 @@ def CMDupload(parser, args):
   # projects that have their source spread across multiple repos.
   remote_url = None
   if settings.GetIsGitSvn():
-    data = RunGit(['svn', 'info'])
+    # URL is dependent on the current directory.
+    data = RunGit(['svn', 'info'], cwd=settings.GetRoot())
     if data:
       keys = dict(line.split(': ', 1) for line in data.splitlines()
                   if ': ' in line)