Add AddEventListenerOptions addEventListenerOptions interface.

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

Index: third_party/WebKit/Source/bindings/core/v8/custom/V8EventTargetCustom.cpp
diff --git a/third_party/WebKit/Source/bindings/core/v8/custom/V8EventTargetCustom.cpp b/third_party/WebKit/Source/bindings/core/v8/custom/V8EventTargetCustom.cpp
index f6db604f45d61588b4928add430550941f5b7b3d..4b20d29d37f0eefaf89a5594407c74b220254557 100644
--- a/third_party/WebKit/Source/bindings/core/v8/custom/V8EventTargetCustom.cpp
+++ b/third_party/WebKit/Source/bindings/core/v8/custom/V8EventTargetCustom.cpp
@@ -95,7 +95,7 @@ void V8EventTarget::addEventListenerMethodCustom(const v8::FunctionCallbackInfo<
     if (!type.prepare())
         return;
     EventListener* listener = V8EventListenerList::getEventListener(ScriptState::current(info.GetIsolate()), info[1], false, ListenerFindOrCreate);
-    EventListenerOptionsOrBoolean options;
+    AddEventListenerOptionsOrBoolean options;

[bokan, 2016/04/26 19:54:59]

This can be moved below the `if` block, right?

[haraken, 2016/04/27 06:36:15]

We want to keep this custom binding as similar to the generated code as
possible.

     // TODO(dtapuska): This custom binding code can be eliminated once
     // EventListenerOptions runtime enabled feature is removed.
     // http://crbug.com/545163
@@ -105,7 +105,7 @@ void V8EventTarget::addEventListenerMethodCustom(const v8::FunctionCallbackInfo<
         addEventListenerMethodEpilogueCustom(info, impl);
         return;
     }
-    V8EventListenerOptionsOrBoolean::toImpl(info.GetIsolate(), info[2], options, UnionTypeConversionMode::NotNullable, exceptionState);
+    V8AddEventListenerOptionsOrBoolean::toImpl(info.GetIsolate(), info[2], options, UnionTypeConversionMode::NotNullable, exceptionState);
     if (exceptionState.throwIfNeeded())
         return;
     addEventListenerMethodPrologueCustom(info, impl);