A quick fix for Issue 18844....

webkit/glue/webview_impl.h

 // Copyright (c) 2009 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 WEBKIT_GLUE_WEBVIEW_IMPL_H_
 #define WEBKIT_GLUE_WEBVIEW_IMPL_H_
 
 #include <set>
 
 #include "Page.h"
@@ skipping 265 matching lines @@
 
   // Returns true if the autocomple has consumed the event.
   bool AutocompleteHandleKeyEvent(const WebKit::WebKeyboardEvent& event);
 
   // Repaints the autofill popup.  Should be called when the suggestions have
   // changed.  Note that this should only be called when the autofill popup is
   // showing.
   void RefreshAutofillPopup();
 
   // Returns true if the view was scrolled.
-  bool ScrollViewWithKeyboard(int key_code);
+  bool ScrollViewWithKeyboard(int key_code, int modifiers);
 
   // Removes fetcher from the set of pending image fetchers and deletes it.
   // This is invoked after the download is completed (or fails).
   void DeleteImageResourceFetcher(webkit_glue::ImageResourceFetcher* fetcher);
 
   // Converts |pos| from window coordinates to contents coordinates and gets
   // the HitTestResult for it.
   WebCore::HitTestResult HitTestResultForWindowPos(
       const WebCore::IntPoint& pos);
 
@@ skipping 73 matching lines @@
   static const WebKit::WebInputEvent* current_input_event() {
     return g_current_input_event;
   }
 private:
   static const WebKit::WebInputEvent* g_current_input_event;
 
   DISALLOW_COPY_AND_ASSIGN(WebViewImpl);
 };
 
 #endif  // WEBKIT_GLUE_WEBVIEW_IMPL_H_