Add support for edit commands in OOPIFs.

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 299 matching lines @@
 public:
     EmptyEditorClient() {}
     ~EmptyEditorClient() override {}
 
     void respondToChangedContents() override {}
     void respondToChangedSelection(LocalFrame*, SelectionType) override {}
 
     bool canCopyCut(LocalFrame*, bool defaultValue) const override { return defaultValue; }
     bool canPaste(LocalFrame*, bool defaultValue) const override { return defaultValue; }
 
-    bool handleKeyboardEvent() override { return false; }
+    bool handleKeyboardEvent(LocalFrame*) override { return false; }
 };
 
 class EmptyContextMenuClient final : public ContextMenuClient {
     WTF_MAKE_NONCOPYABLE(EmptyContextMenuClient); USING_FAST_MALLOC(EmptyContextMenuClient);
 public:
     EmptyContextMenuClient() {}
     ~EmptyContextMenuClient() override {}
     bool showContextMenu(const ContextMenu*, bool) override { return false; }
     void clearContextMenu() override {}
 };
 
 CORE_EXPORT void fillWithEmptyClients(Page::PageClients&);
 
 } // namespace blink
 
 #endif // EmptyClients_h