Histograms.xml python script housekeeping

tools/metrics/histograms/update_net_error_codes.py

Index: tools/metrics/histograms/update_net_error_codes.py
diff --git a/tools/metrics/histograms/update_net_error_codes.py b/tools/metrics/histograms/update_net_error_codes.py
index 3659dd1afccfc7ad61b70a738ae0ad4359795592..37e532375975d644b15fa7f20e98c89589c365a2 100755
--- a/tools/metrics/histograms/update_net_error_codes.py
+++ b/tools/metrics/histograms/update_net_error_codes.py
@@ -14,9 +14,11 @@ import re
 import sys
 
 sys.path.append(os.path.join(os.path.dirname(__file__), '..', 'common'))
-from update_histogram_enum import UpdateHistogramFromDict
+import path_util
 
-NET_ERROR_LIST_PATH = '../../../net/base/net_error_list.h'
+import update_histogram_enum
+
+NET_ERROR_LIST_PATH = 'net/base/net_error_list.h'
 
 POSITIVE_ERROR_REGEX = re.compile(r'^NET_ERROR\(([\w]+), -([0-9]+)\)')
 NEGATIVE_ERROR_REGEX = re.compile(r'^NET_ERROR\(([\w]+), (-[0-9]+)\)')
@@ -26,7 +28,7 @@ def ReadNetErrorCodes(filename, error_regex):
   error code to error name.
   """
   # Read the file as a list of lines
-  with open(filename) as f:
+  with open(path_util.GetInputFile(filename)) as f:
     content = f.readlines()
 
   # Parse out lines that are net errors.
@@ -37,21 +39,22 @@ def ReadNetErrorCodes(filename, error_regex):
       errors[int(m.group(2))] = m.group(1)
   return errors
 
+
 def main():
   if len(sys.argv) > 1:
     print >>sys.stderr, 'No arguments expected!'
     sys.stderr.write(__doc__)
     sys.exit(1)
 
-  UpdateHistogramFromDict(
-    'NetErrorCodes',
-    ReadNetErrorCodes(NET_ERROR_LIST_PATH, POSITIVE_ERROR_REGEX),
-    NET_ERROR_LIST_PATH)
+  update_histogram_enum.UpdateHistogramFromDict(
+      'NetErrorCodes',
+      ReadNetErrorCodes(NET_ERROR_LIST_PATH, POSITIVE_ERROR_REGEX),
+      NET_ERROR_LIST_PATH)
 
-  UpdateHistogramFromDict(
-    'CombinedHttpResponseAndNetErrorCode',
-    ReadNetErrorCodes(NET_ERROR_LIST_PATH, NEGATIVE_ERROR_REGEX),
-    NET_ERROR_LIST_PATH)
+  update_histogram_enum.UpdateHistogramFromDict(
+      'CombinedHttpResponseAndNetErrorCode',
+      ReadNetErrorCodes(NET_ERROR_LIST_PATH, NEGATIVE_ERROR_REGEX),
+      NET_ERROR_LIST_PATH)
 
 if __name__ == '__main__':
   main()