Adjust CSS property maximum tracking to be more clang-format friendly.

third_party/WebKit/Source/core/frame/PRESUBMIT.py

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Blink frame presubmit script
 
 See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts
 for more details about the presubmit API built into gcl.
 """
 
 
 def _RunUseCounterChecks(input_api, output_api):
     for f in input_api.AffectedFiles():
         if f.LocalPath().endswith('UseCounter.cpp'):
             useCounterCpp = f
             break
     else:
         return []
 
     largestFoundBucket = 0
     maximumBucket = 0
     # Looking for a line like "case CSSPropertyGrid: return 453;"
     bucketFinder = input_api.re.compile(r'.*CSSProperty.*return\s*([0-9]+).*')
     # Looking for a line like "int maximumCSSSampleId() { return 452; }"
     maximumFinder = input_api.re.compile(
-        r'int maximumCSSSampleId\(\) { return ([0-9]+)')
+        r'constexpr int kMaximumCSSSampleId = ([0-9]+);')
     for line in useCounterCpp.NewContents():
         bucketMatch = bucketFinder.match(line)
         if bucketMatch:
             bucket = int(bucketMatch.group(1))
             largestFoundBucket = max(largestFoundBucket, bucket)
         else:
             maximumMatch = maximumFinder.match(line)
             if maximumMatch:
                 maximumBucket = int(maximumMatch.group(1))
 
@@ skipping 53 matching lines @@
     results.extend(_RunUseCounterChecks(input_api, output_api))
     results.extend(_RunUmaHistogramChecks(input_api, output_api))
     return results
 
 
 def CheckChangeOnCommit(input_api, output_api):
     results = []
     results.extend(_RunUseCounterChecks(input_api, output_api))
     results.extend(_RunUmaHistogramChecks(input_api, output_api))
     return results