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

Source/core/events/KeyboardEvent.idl

Index: Source/core/events/KeyboardEvent.idl
diff --git a/Source/core/events/KeyboardEvent.idl b/Source/core/events/KeyboardEvent.idl
index 669fa7012d2b096b29ea726c0fcfbef10585bf5b..a83b365d266ad32c0f749659f2db6e1953b39bb3 100644
--- a/Source/core/events/KeyboardEvent.idl
+++ b/Source/core/events/KeyboardEvent.idl
@@ -42,16 +42,16 @@
 
     // https://w3c.github.io/uievents/#idl-interface-KeyboardEvent-initializers
     // FIXME: this does not match the version in the spec.
-    [CallWith=ScriptState] void initKeyboardEvent([Default=Undefined] optional DOMString type,
-                           [Default=Undefined] optional boolean canBubble,
-                           [Default=Undefined] optional boolean cancelable,
-                           [Default=Undefined] optional Window view,
-                           [Default=Undefined] optional DOMString keyIdentifier,
-                           [Default=Undefined] optional unsigned long location,
-                           [Default=Undefined] optional boolean ctrlKey,
-                           [Default=Undefined] optional boolean altKey,
-                           [Default=Undefined] optional boolean shiftKey,
-                           [Default=Undefined] optional boolean metaKey);
+    [CallWith=ScriptState, Measure] void initKeyboardEvent([Default=Undefined] optional DOMString type,
+                                                           [Default=Undefined] optional boolean bubbles,
+                                                           [Default=Undefined] optional boolean cancelable,
+                                                           [Default=Undefined] optional Window view,
+                                                           [Default=Undefined] optional DOMString keyIdentifier,
+                                                           [Default=Undefined] optional unsigned long location,
+                                                           [Default=Undefined] optional boolean ctrlKey,
+                                                           [Default=Undefined] optional boolean altKey,
+                                                           [Default=Undefined] optional boolean shiftKey,
+                                                           [Default=Undefined] optional boolean metaKey);
 
     // https://w3c.github.io/uievents/#KeyboardEvent-supplemental-interface
     readonly attribute long charCode;