Rework dispatchEvent so it is consistent for isTrusted support.

Source/modules/indexeddb/IDBDatabase.cpp

Index: Source/modules/indexeddb/IDBDatabase.cpp
diff --git a/Source/modules/indexeddb/IDBDatabase.cpp b/Source/modules/indexeddb/IDBDatabase.cpp
index 5448d2be5d2ea35cee94bb3ba1546e3530f67314..cafc334bf8103441eac49887816c3d51d17b935e 100644
--- a/Source/modules/indexeddb/IDBDatabase.cpp
+++ b/Source/modules/indexeddb/IDBDatabase.cpp
@@ -401,7 +401,7 @@ void IDBDatabase::enqueueEvent(PassRefPtrWillBeRawPtr<Event> event)
     m_enqueuedEvents.append(event);
 }
 
-bool IDBDatabase::dispatchEvent(PassRefPtrWillBeRawPtr<Event> event)
+bool IDBDatabase::dispatchEventInternal(PassRefPtrWillBeRawPtr<Event> event)
 {
     IDB_TRACE("IDBDatabase::dispatchEvent");
     if (m_contextStopped || !executionContext())
@@ -412,7 +412,7 @@ bool IDBDatabase::dispatchEvent(PassRefPtrWillBeRawPtr<Event> event)
             m_enqueuedEvents.remove(i);
     }
 
-    bool result = EventTarget::dispatchEvent(event.get());
+    bool result = EventTarget::dispatchEventInternal(event.get());
     if (event->type() == EventTypeNames::versionchange && !m_closePending && m_backend)
         m_backend->versionChangeIgnored();
     return result;