Tablet WM : Swiping on system tray bubble.

ash/system/tray/system_tray_test_api.h

 // Copyright 2017 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 ASH_SYSTEM_TRAY_SYSTEM_TRAY_TEST_API_H_
 #define ASH_SYSTEM_TRAY_SYSTEM_TRAY_TEST_API_H_
 
 #include "ash/system/tray/system_tray.h"
 #include "base/macros.h"
 
@@ skipping 10 matching lines @@
   TrayEnterprise* tray_enterprise() { return tray_->tray_enterprise_; }
   TrayNetwork* tray_network() { return tray_->tray_network_; }
   TraySessionLengthLimit* tray_session_length_limit() {
     return tray_->tray_session_length_limit_;
   }
   TraySupervisedUser* tray_supervised_user() {
     return tray_->tray_supervised_user_;
   }
   TraySystemInfo* tray_system_info() { return tray_->tray_system_info_; }
   TrayTiles* tray_tiles() { return tray_->tray_tiles_; }
+  void set_in_maximize_mode(bool in_maximize_mode) {
+    tray_->in_maximize_mode_ = in_maximize_mode;
+  }
 
  private:
   SystemTray* const tray_;
 
   DISALLOW_COPY_AND_ASSIGN(SystemTrayTestApi);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_SYSTEM_TRAY_TEST_API_H_