Convert sticky keys to a chromeos::EventRewriter phase.

ash/shell.cc

 // 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.
 
 #include "ash/shell.h"
 
 #include <algorithm>
 #include <string>
 
 #include "ash/accelerators/accelerator_controller.h"
@@ skipping 883 matching lines @@
 
 #if defined(OS_CHROMEOS) && defined(USE_X11)
   magnifier_key_scroll_handler_ = MagnifierKeyScroller::CreateHandler().Pass();
   AddPreTargetHandler(magnifier_key_scroll_handler_.get());
   speech_feedback_handler_ = SpokenFeedbackToggler::CreateHandler().Pass();
   AddPreTargetHandler(speech_feedback_handler_.get());
 #endif
 
   // The order in which event filters are added is significant.
 
-#if defined(OS_CHROMEOS)
-  // The StickyKeysController also rewrites events and must be added
-  // before observers, but after the EventRewriterEventFilter.
-  sticky_keys_controller_.reset(new StickyKeysController);
-  AddPreTargetHandler(sticky_keys_controller_.get());
-#endif
-
   // wm::UserActivityDetector passes events to observers, so let them get
   // rewritten first.
   user_activity_detector_.reset(new ::wm::UserActivityDetector);
   AddPreTargetHandler(user_activity_detector_.get());
 
   overlay_filter_.reset(new OverlayEventFilter);
   AddPreTargetHandler(overlay_filter_.get());
   AddShellObserver(overlay_filter_.get());
 
   input_method_filter_.reset(new ::wm::InputMethodEventFilter(
@@ skipping 14 matching lines @@
 
   keyboard_metrics_filter_.reset(new KeyboardUMAEventFilter);
   AddPreTargetHandler(keyboard_metrics_filter_.get());
 
   // The keyboard system must be initialized before the RootWindowController is
   // created.
 #if defined(OS_CHROMEOS)
     keyboard::InitializeKeyboard();
 #endif
 
+#if defined(OS_CHROMEOS)
+  sticky_keys_controller_.reset(new StickyKeysController);
+#endif
+
   lock_state_controller_.reset(new LockStateController);
   power_button_controller_.reset(new PowerButtonController(
       lock_state_controller_.get()));
 #if defined(OS_CHROMEOS)
   // Pass the initial display state to PowerButtonController.
   power_button_controller_->OnDisplayModeChanged(
       display_configurator_->cached_displays());
 #endif
   AddShellObserver(lock_state_controller_.get());
 
@@ skipping 196 matching lines @@
 ////////////////////////////////////////////////////////////////////////////////
 // Shell, aura::client::ActivationChangeObserver implementation:
 
 void Shell::OnWindowActivated(aura::Window* gained_active,
                               aura::Window* lost_active) {
   if (gained_active)
     target_root_window_ = gained_active->GetRootWindow();
 }
 
 }  // namespace ash