Simplify V8 wrapper generation for Event objects

Source/bindings/modules/v8/ModuleBindingsInitializer.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "bindings/modules/v8/ModuleBindingsInitializer.h"
 
 #include "bindings/core/v8/ModuleProxy.h"
 #include "bindings/core/v8/V8Event.h"
 #include "bindings/core/v8/V8EventTarget.h"
 #include "modules/EventModulesHeaders.h"
 #include "modules/EventModulesInterfaces.h"
 #include "modules/EventTargetModulesHeaders.h"
 #include "modules/EventTargetModulesInterfaces.h"
 #include "modules/indexeddb/IDBPendingTransactionMonitor.h"
 
 namespace blink {
 
 #define TRY_TO_WRAP_WITH_INTERFACE(interfaceName) \
     if (EventNames::interfaceName == desiredInterface) \
         return wrap(static_cast<interfaceName*>(event), creationContext, isolate);
 
 static v8::Handle<v8::Object> wrapForModuleEvent(Event* event, v8::Handle<v8::Object> creationContext, v8::Isolate *isolate)
 {
     ASSERT(event);
 
     String desiredInterface = event->interfaceName();
-    EVENT_MODULES_INTERFACES_FOR_EACH(TRY_TO_WRAP_WITH_INTERFACE)
+    EVENT_MODULES_INTERFACES_FOR_EACH(TRY_TO_WRAP_WITH_INTERFACE);
+
+    // Wrapping for core event types should have been tried before this
+    // function was called, so |event| should have been a module event type.
+    // If this ASSERT is hit, the event type was missing from both
+    // enumerations.
+    ASSERT_NOT_REACHED();
     return v8::Handle<v8::Object>();
 }
 
 #undef TRY_TO_WRAP_WITH_INTERFACE
 
 #define TRY_TO_TOV8_WITH_INTERFACE(interfaceName) \
     if (EventTargetNames::interfaceName == desiredInterface) \
         return toV8(static_cast<interfaceName*>(impl), creationContext, isolate);
 
 static v8::Handle<v8::Value> toV8ForModuleEventTarget(EventTarget* impl, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
@@ skipping 16 matching lines @@
 }
 
 void ModuleBindingsInitializer::init()
 {
     ModuleProxy::moduleProxy().registerWrapForEvent(wrapForModuleEvent);
     ModuleProxy::moduleProxy().registerToV8ForEventTarget(toV8ForModuleEventTarget);
     ModuleProxy::moduleProxy().registerDidLeaveScriptContextForRecursionScope(didLeaveScriptContextForModule);
 }
 
 } // namespace blink