Add counters for add/removeEventListener() called with one argument

Source/bindings/core/v8/custom/V8EventTargetCustom.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 14 matching lines @@
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "bindings/core/v8/V8EventTarget.h"
 
 #include "bindings/core/v8/V8Window.h"
+#include "core/frame/UseCounter.h"
 
 namespace blink {
 
+void V8EventTarget::addEventListenerMethodPrologueCustom(const v8::FunctionCallbackInfo<v8::Value>& info, EventTarget*)
+{
+    if (info.Length() < 2) {
+        UseCounter::countIfNotPrivateScript(info.GetIsolate(), callingExecutionContext(info.GetIsolate()),
+            info.Length() == 0 ? UseCounter::AddEventListenerNoArguments : UseCounter::AddEventListenerOneArgument);
+    }
+}
+
 void V8EventTarget::addEventListenerMethodEpilogueCustom(const v8::FunctionCallbackInfo<v8::Value>& info, EventTarget* impl)
 {
     if (info.Length() >= 2 && info[1]->IsObject() && !impl->toNode())
         addHiddenValueToArray(info.GetIsolate(), info.Holder(), info[1], V8EventTarget::eventListenerCacheIndex);
 }
 
+void V8EventTarget::removeEventListenerMethodPrologueCustom(const v8::FunctionCallbackInfo<v8::Value>& info, EventTarget*)
+{
+    if (info.Length() < 2) {
+        UseCounter::countIfNotPrivateScript(info.GetIsolate(), callingExecutionContext(info.GetIsolate()),
+            info.Length() == 0 ? UseCounter::RemoveEventListenerNoArguments : UseCounter::RemoveEventListenerOneArgument);
+    }
+}
+
 void V8EventTarget::removeEventListenerMethodEpilogueCustom(const v8::FunctionCallbackInfo<v8::Value>& info, EventTarget* impl)
 {
     if (info.Length() >= 2 && info[1]->IsObject() && !impl->toNode())
         removeHiddenValueFromArray(info.GetIsolate(), info.Holder(), info[1], V8EventTarget::eventListenerCacheIndex);
 }
 
 } // namespace blink