Add use counters for lots of DOM APIs.

third_party/WebKit/Source/modules/indexeddb/IDBRequest.idl

Index: third_party/WebKit/Source/modules/indexeddb/IDBRequest.idl
diff --git a/third_party/WebKit/Source/modules/indexeddb/IDBRequest.idl b/third_party/WebKit/Source/modules/indexeddb/IDBRequest.idl
index d9f5b193ebcb5389416d3df844d5089467743c91..1d892f5b6f924a15ca530f485bf2cd1b24b895c7 100644
--- a/third_party/WebKit/Source/modules/indexeddb/IDBRequest.idl
+++ b/third_party/WebKit/Source/modules/indexeddb/IDBRequest.idl
@@ -41,16 +41,16 @@ enum IDBRequestReadyState {
     DependentLifetime,
     Exposed=(Window,Worker),
 ] interface IDBRequest : EventTarget {
-    [CallWith=ScriptState, RaisesException=Getter, CachedAttribute=isResultDirty] readonly attribute any result;
-    [RaisesException=Getter] readonly attribute DOMException error;
+    [Measure, CallWith=ScriptState, RaisesException=Getter, CachedAttribute=isResultDirty] readonly attribute any result;
+  [Measure, RaisesException=Getter] readonly attribute DOMException error;
 
-    [CallWith=ScriptState] readonly attribute any source;
-    readonly attribute IDBTransaction transaction;
+  [Measure, CallWith=ScriptState] readonly attribute any source;
+    [Measure] readonly attribute IDBTransaction transaction;
 
     // States
-    readonly attribute IDBRequestReadyState readyState;
+    [Measure] readonly attribute IDBRequestReadyState readyState;
 
     // Events
-    attribute EventHandler onsuccess;
-    attribute EventHandler onerror;
+    [Measure] attribute EventHandler onsuccess;
+    [Measure] attribute EventHandler onerror;
 };