Add git svn support to create_graph.py.

tools/testing/perf_testing/create_graph.py

 #!/usr/bin/python
 
 # Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 import datetime
 import math
 from matplotlib.font_manager import FontProperties
 import matplotlib.pyplot as plt
@@ skipping 258 matching lines @@
     fontP = FontProperties()
     fontP.set_size('small')
     plt.legend(loc=legend_loc, prop = fontP)
 
     fig = plt.gcf()
     fig.set_size_inches(size_x, size_y)
     fig.savefig(os.path.join(GRAPH_OUT_DIR, filename))
 
   def add_svn_revision_to_trace(self, outfile):
     """Add the svn version number to the provided tracefile."""
-    p = subprocess.Popen(['svn', 'info'], stdout = subprocess.PIPE, 
-      stderr = subprocess.STDOUT, shell = HAS_SHELL)
-    output, not_used = p.communicate()
-    for line in output.split('\n'):
-      if 'Revision' in line:
-        run_cmd(['echo', line.strip()], outfile)
+    def search_for_revision(svn_info_command):
+      p = subprocess.Popen(svn_info_command, stdout = subprocess.PIPE,
+                           stderr = subprocess.STDOUT, shell = HAS_SHELL)
+      output, _ = p.communicate()
+      for line in output.split('\n'):
+        if 'Revision' in line:
+          run_cmd(['echo', line.strip()], outfile)
+          return True
+      return False
+
+    if not search_for_revision(['svn', 'info']):
+      if not search_for_revision(['git', 'svn', 'info']):
+        run_cmd(['echo', 'Revision: unknown'], outfile)
 
   def write_html(self, delimiter, rev_nums, label_1, dict_1, label_2, dict_2, 
       cleanFile=False):
     """Adds an html table to the webpage to display the data values. This method
     will be removed when we have a nicer way to display data values."""
     #TODO(efortuna): fix this.
     return
     #TODO(efortuna): Take this method out when have finalized where the data is
     # going to be displayed.
     f = ''
@@ skipping 454 matching lines @@
     while True:
       if has_new_code():
         run_test_sequence(cl, size, language, perf)
       else:
         time.sleep(SLEEP_TIME)
   else:
     run_test_sequence(cl, size, language, perf)
 
 if __name__ == '__main__':
   main()
-