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

Source/core/css/CSSTestHelper.cpp

Index: Source/core/css/CSSTestHelper.cpp
diff --git a/Source/core/css/CSSTestHelper.cpp b/Source/core/css/CSSTestHelper.cpp
index d0fac9fa03aa49127fdfcf7bd441c12b7ec33795..3b24d9c75e44f8dcf59fabefacdb7c7815c7587b 100644
--- a/Source/core/css/CSSTestHelper.cpp
+++ b/Source/core/css/CSSTestHelper.cpp
@@ -67,26 +67,4 @@ void CSSTestHelper::addCSSRules(const char* cssText)
     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