Remove virtual keyboard support.

chrome/common/extensions/extension.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_COMMON_EXTENSIONS_EXTENSION_H_
 #define CHROME_COMMON_EXTENSIONS_EXTENSION_H_
 #pragma once
 
 #include <algorithm>
 #include <map>
@@ skipping 122 matching lines @@
 
   // An NaCl module included in the extension.
   struct NaClModuleInfo {
     GURL url;
     std::string mime_type;
   };
 
   enum InputComponentType {
     INPUT_COMPONENT_TYPE_NONE = -1,
     INPUT_COMPONENT_TYPE_IME,
-    INPUT_COMPONENT_TYPE_VIRTUAL_KEYBOARD,
     INPUT_COMPONENT_TYPE_COUNT
   };
 
   struct InputComponentInfo {
     // Define out of line constructor/destructor to please Clang.
     InputComponentInfo();
     ~InputComponentInfo();
 
     std::string name;
     InputComponentType type;
@@ skipping 968 matching lines @@
 
   UpdatedExtensionPermissionsInfo(
       const Extension* extension,
       const ExtensionPermissionSet* permissions,
       Reason reason);
 };
 
 } // namespace extensions
 
 #endif  // CHROME_COMMON_EXTENSIONS_EXTENSION_H_