IndexedDB: Clean up boilerplate when throwing TransactionInactiveError

third_party/WebKit/Source/modules/indexeddb/IDBTransaction.cpp

 /*
  * Copyright (C) 2010 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 467 matching lines @@
 }
 
 const AtomicString& IDBTransaction::InterfaceName() const {
   return EventTargetNames::IDBTransaction;
 }
 
 ExecutionContext* IDBTransaction::GetExecutionContext() const {
   return ContextLifecycleObserver::GetExecutionContext();
 }
 
+const char* IDBTransaction::InactiveErrorMessage() const {
+  switch (state_) {
+    case kActive:
+      // Callers should check !IsActive() before calling.
+      NOTREACHED();
+      return nullptr;
+    case kInactive:
+      return IDBDatabase::kTransactionInactiveErrorMessage;
+    case kFinishing:
+    case kFinished:
+      return IDBDatabase::kTransactionFinishedErrorMessage;
+  }
+  NOTREACHED();
+  return nullptr;
+}
+
 DispatchEventResult IDBTransaction::DispatchEventInternal(Event* event) {
   IDB_TRACE("IDBTransaction::dispatchEvent");
   if (!GetExecutionContext()) {
     state_ = kFinished;
     return DispatchEventResult::kCanceledBeforeDispatch;
   }
   DCHECK_NE(state_, kFinished);
   DCHECK(has_pending_activity_);
   DCHECK(GetExecutionContext());
   DCHECK_EQ(event->target(), this);
@@ skipping 100 matching lines @@
     IDBObjectStore* object_store = it.key;
     object_store->ClearIndexCache();
   }
   old_store_metadata_.Clear();
 
   deleted_indexes_.Clear();
   deleted_object_stores_.Clear();
 }
 
 }  // namespace blink