Add use counters for lots of DOM APIs.

third_party/WebKit/Source/core/css/CSSStyleSheet.idl

Index: third_party/WebKit/Source/core/css/CSSStyleSheet.idl
diff --git a/third_party/WebKit/Source/core/css/CSSStyleSheet.idl b/third_party/WebKit/Source/core/css/CSSStyleSheet.idl
index c97f1464e45abcf65c240e5b6afb3dc8c661d443..30d8af94628ba56818d491c0104de33b6db26df6 100644
--- a/third_party/WebKit/Source/core/css/CSSStyleSheet.idl
+++ b/third_party/WebKit/Source/core/css/CSSStyleSheet.idl
@@ -23,11 +23,11 @@
 [
     SetWrapperReferenceFrom=ownerNode,
 ] interface CSSStyleSheet : StyleSheet {
-    readonly attribute CSSRule? ownerRule;
-    [SameObject] readonly attribute CSSRuleList cssRules;
+    [Measure] readonly attribute CSSRule? ownerRule;
+    [Measure, SameObject] readonly attribute CSSRuleList cssRules;
     // TODO(foolip): The index argument should not be optional. crbug.com/319695
-    [RaisesException] unsigned long insertRule(DOMString rule, optional unsigned long index);
-    [RaisesException] void deleteRule(unsigned long index);
+    [Measure, RaisesException] unsigned long insertRule(DOMString rule, optional unsigned long index);
+    [Measure, RaisesException] void deleteRule(unsigned long index);
 
     // Non-standard APIs
     [MeasureAs=CSSStyleSheetRules] readonly attribute CSSRuleList rules;