Histograms.xml python script housekeeping

tools/metrics/histograms/pretty_print.py

Index: tools/metrics/histograms/pretty_print.py
diff --git a/tools/metrics/histograms/pretty_print.py b/tools/metrics/histograms/pretty_print.py
index 41cc2b6126cba9876d454dd66a56bbd0cbe107c8..42f4e6b4e48accb2a24323fb3c0631893c92a98c 100755
--- a/tools/metrics/histograms/pretty_print.py
+++ b/tools/metrics/histograms/pretty_print.py
@@ -20,16 +20,12 @@ import shutil
 import sys
 import xml.dom.minidom
 
-import print_style
-
-sys.path.insert(1, os.path.join(sys.path[0], '..', '..', 'python'))
-from google import path_utils
-
-# Import the metrics/common module.
 sys.path.append(os.path.join(os.path.dirname(__file__), '..', 'common'))
 import diff_util
 import presubmit_util
 
+import print_style
+
 # Tags whose children we want to alphabetize. The key is the parent tag name,
 # and the value is a pair of the tag name of the children we want to sort,
 # and a key function that maps each child node to the desired sort key.
@@ -73,7 +69,8 @@ def TransformByAlphabetizing(node):
     directly.
   """
   if node.nodeType != xml.dom.minidom.Node.ELEMENT_NODE:
-    for c in node.childNodes: TransformByAlphabetizing(c)
+    for c in node.childNodes:
+      TransformByAlphabetizing(c)
     return node
 
   # Element node with a tag name that we alphabetize the children of?
@@ -114,7 +111,8 @@ def TransformByAlphabetizing(node):
     return node
 
   # Recursively handle other element nodes and other node types.
-  for c in node.childNodes: TransformByAlphabetizing(c)
+  for c in node.childNodes:
+    TransformByAlphabetizing(c)
   return node
 
 
@@ -131,6 +129,7 @@ def PrettyPrint(raw_xml):
   tree = TransformByAlphabetizing(tree)
   return print_style.GetPrintStyle().PrettyPrintNode(tree)
 
+
 def main():
   presubmit_util.DoPresubmitMain(sys.argv, 'histograms.xml',
                                  'histograms.before.pretty-print.xml',