Introduce TerminatedArray<T> type to make data-structure used by RuleSet visible at the type level.

Source/core/css/CSSTestHelper.cpp

 /*
  * Copyright (c) 2014, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 49 matching lines @@
 }
 
 void CSSTestHelper::addCSSRules(const char* cssText)
 {
     TextPosition position;
     unsigned sheetLength = m_styleSheet->length();
     ASSERT_TRUE(m_styleSheet->contents()->parseStringAtPosition(cssText, position, true));
     ASSERT_TRUE(m_styleSheet->length() > sheetLength);
 }
 
-int CSSTestHelper::numRules(const RuleData* ruleData)
-{
-    if (!ruleData)
-        return 0;
-    int count = 1;
-    while (!ruleData->isLastInArray()) {
-        ruleData++;
-        count++;
-    }
-    return count;
-}
-
-const RuleData& CSSTestHelper::getRule(const RuleData* ruleData, int index)
-{
-    int count = 0;
-    while (!ruleData->isLastInArray() && count < index) {
-        ruleData++;
-        count++;
-    }
-    return *ruleData;
-}
-
 } // namespace WebCore