CSS Motion Path: Use counter for offset-rotate

tools/metrics/histograms/update_use_counter_css.py

Index: tools/metrics/histograms/update_use_counter_css.py
diff --git a/tools/metrics/histograms/update_use_counter_css.py b/tools/metrics/histograms/update_use_counter_css.py
index a598439007d2cc7aac7df5c1414afb61afa1f5c7..a4dd2865eddb93de066c3bdca4c3928d8d4e920d 100755
--- a/tools/metrics/histograms/update_use_counter_css.py
+++ b/tools/metrics/histograms/update_use_counter_css.py
@@ -36,19 +36,23 @@ def ReadCssProperties(filename):
   with open(path_util.GetInputFile(filename)) as f:
     content = f.readlines()
 
-  # Looking for a line like "case CSSPropertyGrid: return 453;".
+  # Looking for a pair of lines like "case CSSPropertyGrid:\n return 453;".
   ENUM_REGEX = re.compile(r"""CSSProperty(.*):  # capture the enum name
                               \s*return\s*
                               ([0-9]+)          # capture the id
                               """, re.VERBOSE)
 
   properties = {}
+  previous_line = ''
   for line in content:
-    enum_match = ENUM_REGEX.search(line)
+    enum_match = ENUM_REGEX.search(previous_line + '\n' + line)
     if enum_match:
       enum_name = enum_match.group(1)
       property_id = int(enum_match.group(2))
       properties[property_id] = EnumToCssProperty(enum_name)
+      previous_line = ''
+    else:
+      previous_line = line

[Ilya Sherman, 2016/12/08 04:52:33]

Hmm, odd.  Did the structure of the file recently change, or have people just
not been running this script and updating the histogram values manually? :-/

[Eric Willigers, 2016/12/08 05:03:56]

clang-format was run across Blink on Sep 30:
1c8e1a7719e9d223cc84e838c9a31a0210f5878b

text-decoration-skip was the only property added to the XML since then.
https://codereview.chromium.org/2394273006/patch/20001/30021

[Ilya Sherman, 2016/12/08 05:04:33]

Okay, that makes sense.  Thanks!

 
   return properties