Convert KeyboardDrivenEventRewriter to a ui::EventRewriter.

chrome/browser/chromeos/chrome_browser_main_chromeos.cc

Index: chrome/browser/chromeos/chrome_browser_main_chromeos.cc
diff --git a/chrome/browser/chromeos/chrome_browser_main_chromeos.cc b/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
index adf3739298038f267d447494a72a011875deaea8..185a9573321e8f67418bcc0c76dba41f2bd4df88 100644
--- a/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
+++ b/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
@@ -112,6 +112,8 @@
 #if defined(USE_X11)
 #include "chrome/browser/chromeos/device_uma.h"
 #include "chrome/browser/chromeos/events/event_rewriter.h"
+#include "chrome/browser/chromeos/events/event_rewriter_controller.h"
+#include "chrome/browser/chromeos/events/keyboard_driven_event_rewriter.h"
 #include "chrome/browser/chromeos/events/system_key_event_listener.h"
 #include "chrome/browser/chromeos/events/xinput_hierarchy_changed_event_listener.h"
 #endif
@@ -706,6 +708,8 @@ void ChromeBrowserMainPartsChromeos::PreBrowserStart() {
   DeviceUMA::GetInstance();
 
   event_rewriter_.reset(new EventRewriter());
+  keyboard_driven_event_rewriter_.reset(
+      new EventRewriterController(new KeyboardDrivenEventRewriter()));
 #endif
 
   // -- This used to be in ChromeBrowserMainParts::PreMainMessageLoopRun()
@@ -731,6 +735,10 @@ void ChromeBrowserMainPartsChromeos::PostBrowserStart() {
   power_button_observer_.reset(new PowerButtonObserver);
   data_promo_notification_.reset(new DataPromoNotification()),
 
+#if defined(USE_X11)
+  keyboard_driven_event_rewriter_->Init();
+#endif
+
   ChromeBrowserMainPartsLinux::PostBrowserStart();
 }
 
@@ -776,6 +784,7 @@ void ChromeBrowserMainPartsChromeos::PostMainMessageLoopRun() {
     ScreenLocker::ShutDownClass();
 
 #if defined(USE_X11)
+  keyboard_driven_event_rewriter_.reset();
   event_rewriter_.reset();
 
   // The XInput2 event listener needs to be shut down earlier than when