Change CSSParserContext to have a Document handle (vs UseCounter).

third_party/WebKit/Source/core/css/properties/CSSPropertyLengthUtils.cpp

Index: third_party/WebKit/Source/core/css/properties/CSSPropertyLengthUtils.cpp
diff --git a/third_party/WebKit/Source/core/css/properties/CSSPropertyLengthUtils.cpp b/third_party/WebKit/Source/core/css/properties/CSSPropertyLengthUtils.cpp
index 1222ac6029cd67225e5e20e99cccf0e232439a43..f5189aee3c238de2a87f01bf66e02bd0be6ba470 100644
--- a/third_party/WebKit/Source/core/css/properties/CSSPropertyLengthUtils.cpp
+++ b/third_party/WebKit/Source/core/css/properties/CSSPropertyLengthUtils.cpp
@@ -17,24 +17,21 @@ bool validWidthOrHeightKeyword(CSSValueID id, const CSSParserContext* context) {
       id == CSSValueWebkitFillAvailable || id == CSSValueWebkitFitContent ||
       id == CSSValueMinContent || id == CSSValueMaxContent ||
       id == CSSValueFitContent) {
-    if (context->isUseCounterRecordingEnabled()) {
-      UseCounter* useCounter = context->useCounter();
-      switch (id) {
-        case CSSValueWebkitMinContent:
-          useCounter->count(UseCounter::CSSValuePrefixedMinContent);
-          break;
-        case CSSValueWebkitMaxContent:
-          useCounter->count(UseCounter::CSSValuePrefixedMaxContent);
-          break;
-        case CSSValueWebkitFillAvailable:
-          useCounter->count(UseCounter::CSSValuePrefixedFillAvailable);
-          break;
-        case CSSValueWebkitFitContent:
-          useCounter->count(UseCounter::CSSValuePrefixedFitContent);
-          break;
-        default:
-          break;
-      }
+    switch (id) {
+      case CSSValueWebkitMinContent:
+        context->count(UseCounter::CSSValuePrefixedMinContent);
+        break;
+      case CSSValueWebkitMaxContent:
+        context->count(UseCounter::CSSValuePrefixedMaxContent);
+        break;
+      case CSSValueWebkitFillAvailable:
+        context->count(UseCounter::CSSValuePrefixedFillAvailable);
+        break;
+      case CSSValueWebkitFitContent:
+        context->count(UseCounter::CSSValuePrefixedFitContent);
+        break;
+      default:
+        break;
     }
     return true;
   }