Convert KeyboardDrivenEventRewriter to a ui::EventRewriter.

chrome/browser/chromeos/chrome_browser_main_chromeos.h

Index: chrome/browser/chromeos/chrome_browser_main_chromeos.h
diff --git a/chrome/browser/chromeos/chrome_browser_main_chromeos.h b/chrome/browser/chromeos/chrome_browser_main_chromeos.h
index 7dc069da4a61d344cce94a227aac75a12e13b339..cc6b06bf75d8bebffad013dd2688bd162cf7cc7a 100644
--- a/chrome/browser/chromeos/chrome_browser_main_chromeos.h
+++ b/chrome/browser/chromeos/chrome_browser_main_chromeos.h
@@ -18,6 +18,7 @@ namespace chromeos {
 
 class DataPromoNotification;
 class EventRewriter;
+class EventRewriterController;
 class ExtensionSystemEventObserver;
 class IdleActionWarningObserver;
 class MagnificationManager;
@@ -71,6 +72,7 @@ class ChromeBrowserMainPartsChromeos : public ChromeBrowserMainPartsLinux {
 #if defined(USE_X11)
   scoped_ptr<EventRewriter> event_rewriter_;
 #endif
+  scoped_ptr<EventRewriterController> keyboard_event_rewriters_;
 
   VersionLoader cros_version_loader_;
   base::CancelableTaskTracker tracker_;