Change computed style enums to be prefixed with 'k'.

third_party/WebKit/Source/core/dom/DocumentStatisticsCollector.cpp

 // Copyright 2015 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.
 
 #include "DocumentStatisticsCollector.h"
 
 #include "core/HTMLNames.h"
 #include "core/InputTypeNames.h"
 #include "core/dom/ElementTraversal.h"
 #include "core/dom/NodeComputedStyle.h"
@@ skipping 46 matching lines @@
     }
   }
   return length;
 }
 
 bool isVisible(const Element& element) {
   const ComputedStyle* style = element.computedStyle();
   if (!style)
     return false;
   return (style->display() != EDisplay::None &&
-          style->visibility() != EVisibility::Hidden && style->opacity() != 0);
+          style->visibility() != EVisibility::kHidden && style->opacity() != 0);
 }
 
 bool matchAttributes(const Element& element, const Vector<String>& words) {
   const String& classes = element.getClassAttribute();
   const String& id = element.getIdAttribute();
   for (const String& word : words) {
     if (classes.findIgnoringCase(word) != WTF::kNotFound ||
         id.findIgnoringCase(word) != WTF::kNotFound) {
       return true;
     }
@@ skipping 142 matching lines @@
   double elapsedTime = monotonicallyIncreasingTime() - startTime;
 
   DEFINE_STATIC_LOCAL(CustomCountHistogram, distillabilityHistogram,
                       ("WebCore.DistillabilityUs", 1, 1000000, 50));
   distillabilityHistogram.count(static_cast<int>(1e6 * elapsedTime));
 
   return features;
 }
 
 }  // namespace blink