Make WebSpellCheckClient aware of leak detection

third_party/WebKit/Source/core/loader/EmptyClients.cpp

 /*
  * Copyright (C) 2006 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009, 2012 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2011. 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.
@@ skipping 148 matching lines @@
 
 std::unique_ptr<WebMediaSession> EmptyFrameLoaderClient::createWebMediaSession()
 {
     return nullptr;
 }
 
 void EmptyTextCheckerClient::requestCheckingOfString(TextCheckingRequest*)
 {
 }
 
+void EmptyTextCheckerClient::cancelAllPendingRequests()
+{
+}
+
 std::unique_ptr<WebServiceWorkerProvider> EmptyFrameLoaderClient::createServiceWorkerProvider()
 {
     return nullptr;
 }
 
 std::unique_ptr<WebApplicationCacheHost> EmptyFrameLoaderClient::createApplicationCacheHost(WebApplicationCacheHostClient*)
 {
     return nullptr;
 }
 
 } // namespace blink