Reduce SuspendableObjects

third_party/WebKit/Source/modules/indexeddb/IDBDatabase.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 74 matching lines @@
 const char IDBDatabase::transactionFinishedErrorMessage[] =
     "The transaction has finished.";
 const char IDBDatabase::transactionReadOnlyErrorMessage[] =
     "The transaction is read-only.";
 const char IDBDatabase::databaseClosedErrorMessage[] =
     "The database connection is closed.";
 
 IDBDatabase* IDBDatabase::create(ExecutionContext* context,
                                  std::unique_ptr<WebIDBDatabase> database,
                                  IDBDatabaseCallbacks* callbacks) {
-  IDBDatabase* idbDatabase =
-      new IDBDatabase(context, std::move(database), callbacks);
-  idbDatabase->suspendIfNeeded();
-  return idbDatabase;
+  return new IDBDatabase(context, std::move(database), callbacks);
 }
 
 IDBDatabase::IDBDatabase(ExecutionContext* context,
                          std::unique_ptr<WebIDBDatabase> backend,
                          IDBDatabaseCallbacks* callbacks)
-    : SuspendableObject(context),
+    : ContextLifecycleObserver(context),
       m_backend(std::move(backend)),
       m_databaseCallbacks(callbacks) {
   m_databaseCallbacks->connect(this);
 }
 
 IDBDatabase::~IDBDatabase() {
   if (!m_closePending && m_backend)
     m_backend->close();
 }
 
 DEFINE_TRACE(IDBDatabase) {
   visitor->trace(m_versionChangeTransaction);
   visitor->trace(m_transactions);
   visitor->trace(m_observers);
   visitor->trace(m_enqueuedEvents);
   visitor->trace(m_databaseCallbacks);
   EventTargetWithInlineData::trace(visitor);
-  SuspendableObject::trace(visitor);
+  ContextLifecycleObserver::trace(visitor);
 }
 
 int64_t IDBDatabase::nextTransactionId() {
   // Only keep a 32-bit counter to allow ports to use the other 32
   // bits of the id.
   static int currentTransactionId = 0;
   return atomicIncrement(&currentTransactionId);
 }
 
 int32_t IDBDatabase::nextObserverId() {
@@ skipping 438 matching lines @@
 
   if (m_databaseCallbacks)
     m_databaseCallbacks->detachWebCallbacks();
 }
 
 const AtomicString& IDBDatabase::interfaceName() const {
   return EventTargetNames::IDBDatabase;
 }
 
 ExecutionContext* IDBDatabase::getExecutionContext() const {
-  return SuspendableObject::getExecutionContext();
+  return ContextLifecycleObserver::getExecutionContext();
 }
 
 void IDBDatabase::recordApiCallsHistogram(IndexedDatabaseMethods method) {
   DEFINE_THREAD_SAFE_STATIC_LOCAL(
       EnumerationHistogram, apiCallsHistogram,
       new EnumerationHistogram("WebCore.IndexedDB.FrontEndAPICalls",
                                IDBMethodsMax));
   apiCallsHistogram.count(method);
 }
 
 }  // namespace blink