Do not use ash in chromeos::EventRewriter.

ash/sticky_keys/sticky_keys_unittest.cc

 // Copyright 2013 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/sticky_keys/sticky_keys_controller.h"
 
 #include "ash/shell.h"
 #include "ash/test/ash_test_base.h"
 #include "base/bind.h"
 #include "base/callback.h"
@@ skipping 187 matching lines @@
     dispatcher.set_target(target_);
     return event;
   }
 
   void SendActivateStickyKeyPattern(StickyKeysHandler* handler,
                                     ui::KeyboardCode key_code) {
     bool released = false;
     int down_flags = 0;
     std::unique_ptr<ui::KeyEvent> ev;
     ev.reset(GenerateKey(ui::ET_KEY_PRESSED, key_code));
-    handler->HandleKeyEvent(*ev.get(), key_code, &down_flags, &released);
+    handler->HandleKeyEvent(*ev.get(), &down_flags, &released);
     ev.reset(GenerateKey(ui::ET_KEY_RELEASED, key_code));
-    handler->HandleKeyEvent(*ev.get(), key_code, &down_flags, &released);
+    handler->HandleKeyEvent(*ev.get(), &down_flags, &released);
   }
 
   bool HandleKeyEvent(const ui::KeyEvent& key_event,
                       StickyKeysHandler* handler,
                       int* down,
                       bool* up) {
-    return handler->HandleKeyEvent(key_event, key_event.key_code(), down, up);
+    return handler->HandleKeyEvent(key_event, down, up);
   }
 
   int HandleKeyEventForDownFlags(const ui::KeyEvent& key_event,
                                  StickyKeysHandler* handler) {
     bool released = false;
     int down = 0;
-    handler->HandleKeyEvent(key_event, key_event.key_code(), &down, &released);
+    handler->HandleKeyEvent(key_event, &down, &released);
     return down;
   }
 
   aura::Window* target() { return target_; }
 
  private:
   // Owned by root window of shell, but we can still delete |target_| safely.
   aura::Window* target_;
   // The root window of |target_|. Not owned.
   aura::Window* root_window_;
@@ skipping 507 matching lines @@
                                                gfx::Point(0, 0)));
   released = false;
   mod_down_flags = 0;
   sticky_key.HandleMouseEvent(*mev.get(), &mod_down_flags, &released);
   EXPECT_TRUE(mod_down_flags & ui::EF_CONTROL_DOWN);
   EXPECT_TRUE(released);
   EXPECT_EQ(STICKY_KEY_STATE_DISABLED, sticky_key.current_state());
 }
 
 }  // namespace ash