Stop TextCheckingHelper from checking grammar

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

 /*
  * Copyright (C) 2006 Eric Seidel (eric@webkit.org)
  * Copyright (C) 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
  * Copyright (C) 2012 Samsung Electronics. 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
@@ skipping 265 matching lines @@
 protected:
     EmptyFrameLoaderClient() {}
 };
 
 class CORE_EXPORT EmptyTextCheckerClient : public TextCheckerClient {
     DISALLOW_NEW();
 public:
     ~EmptyTextCheckerClient() { }
 
     void checkSpellingOfString(const String&, int*, int*) override {}
-    void checkGrammarOfString(const String&, Vector<GrammarDetail>&, int*, int*) override {}
     void requestCheckingOfString(TextCheckingRequest*) override;
 };
 
 class EmptySpellCheckerClient : public SpellCheckerClient {
     WTF_MAKE_NONCOPYABLE(EmptySpellCheckerClient); USING_FAST_MALLOC(EmptySpellCheckerClient);
 public:
     EmptySpellCheckerClient() {}
     ~EmptySpellCheckerClient() override {}
 
     bool isContinuousSpellCheckingEnabled() override { return false; }
@@ skipping 31 matching lines @@
     ~EmptyContextMenuClient() override {}
     bool showContextMenu(const ContextMenu*, bool) override { return false; }
     void clearContextMenu() override {}
 };
 
 CORE_EXPORT void fillWithEmptyClients(Page::PageClients&);
 
 } // namespace blink
 
 #endif // EmptyClients_h