Add UseCounters for init*Event methods that aren't already measured

Source/modules/storage/StorageEvent.idl

Index: Source/modules/storage/StorageEvent.idl
diff --git a/Source/modules/storage/StorageEvent.idl b/Source/modules/storage/StorageEvent.idl
index f45415c1dc4c67e6c25d105b23a60b65148af286..af603e4ed5ab9b407e1553379683c4f7ae4b059c 100644
--- a/Source/modules/storage/StorageEvent.idl
+++ b/Source/modules/storage/StorageEvent.idl
@@ -34,16 +34,15 @@
     readonly attribute DOMString url;
     readonly attribute Storage? storageArea;
 
-    void initStorageEvent([Default=Undefined] optional DOMString typeArg,
-                          [Default=Undefined] optional boolean canBubbleArg,
-                          [Default=Undefined] optional boolean cancelableArg,
-                          [Default=Undefined] optional DOMString keyArg,
-                          [Default=Undefined] optional DOMString? oldValueArg,
-                          [Default=Undefined] optional DOMString? newValueArg,
-                          [Default=Undefined] optional DOMString urlArg,
-                          [Default=Undefined] optional Storage storageAreaArg);
+    [Measure] void initStorageEvent([Default=Undefined] optional DOMString typeArg,
+                                    [Default=Undefined] optional boolean canBubbleArg,
+                                    [Default=Undefined] optional boolean cancelableArg,
+                                    [Default=Undefined] optional DOMString keyArg,
+                                    [Default=Undefined] optional DOMString? oldValueArg,
+                                    [Default=Undefined] optional DOMString? newValueArg,
+                                    [Default=Undefined] optional DOMString urlArg,
+                                    [Default=Undefined] optional Storage storageAreaArg);
 
     // Needed once we support init<blank>EventNS
     // void initStorageEventNS(DOMString namespaceURI, DOMString typeArg, boolean canBubbleArg, boolean cancelableArg, DOMString keyArg, DOMString oldValueArg, DOMString newValueArg, DOMString urlArg, Storage storageAreaArg);
 };
-