Add MockInputMethodManager under ui/base/ime/chromeos/

chrome/browser/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/chrome_build.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//build/split_static_library.gni")
 import("//chrome/common/features.gni")
@@ skipping 4311 matching lines @@
       "chromeos/app_mode/fake_cws.cc",
       "chromeos/app_mode/fake_cws.h",
       "chromeos/arc/extensions/fake_arc_support.cc",
       "chromeos/arc/extensions/fake_arc_support.h",
       "chromeos/file_manager/fake_disk_mount_manager.cc",
       "chromeos/file_manager/fake_disk_mount_manager.h",
       "chromeos/input_method/mock_candidate_window_controller.cc",
       "chromeos/input_method/mock_candidate_window_controller.h",
       "chromeos/input_method/mock_input_method_engine.cc",
       "chromeos/input_method/mock_input_method_engine.h",
-      "chromeos/input_method/mock_input_method_manager.cc",
-      "chromeos/input_method/mock_input_method_manager.h",
+      "chromeos/input_method/mock_input_method_manager_impl.cc",
+      "chromeos/input_method/mock_input_method_manager_impl.h",
       "chromeos/login/screens/mock_device_disabled_screen_actor.cc",
       "chromeos/login/screens/mock_device_disabled_screen_actor.h",
       "chromeos/login/session/user_session_manager_test_api.cc",
       "chromeos/login/session/user_session_manager_test_api.h",
       "chromeos/login/test/js_checker.cc",
       "chromeos/login/test/js_checker.h",
       "chromeos/login/test/oobe_screen_waiter.cc",
       "chromeos/login/test/oobe_screen_waiter.h",
       "chromeos/login/ui/mock_login_display.cc",
       "chromeos/login/ui/mock_login_display.h",
@@ skipping 143 matching lines @@
       "media/pepper_cdm_test_constants.cc",
       "media/pepper_cdm_test_constants.h",
     ]
   }
 }
 
 service_manifest("preferences_manifest") {
   name = "preferences"
   source = "prefs/preferences_manifest.json"
 }