Add MockInputMethodManager under ui/base/ime/chromeos/

ui/base/ime/BUILD.gn

 # Copyright 2015 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/ui.gni")
 import("//testing/test.gni")
 
 source_set("text_input_types") {
   sources = [
     "text_input_flags.h",
@@ skipping 30 matching lines @@
     "chromeos/input_method_descriptor.cc",
     "chromeos/input_method_descriptor.h",
     "chromeos/input_method_manager.cc",
     "chromeos/input_method_manager.h",
     "chromeos/mock_component_extension_ime_manager_delegate.cc",
     "chromeos/mock_component_extension_ime_manager_delegate.h",
     "chromeos/mock_ime_candidate_window_handler.cc",
     "chromeos/mock_ime_candidate_window_handler.h",
     "chromeos/mock_ime_engine_handler.cc",
     "chromeos/mock_ime_engine_handler.h",
+    "chromeos/mock_input_method_manager.cc",

[sky, 2017/01/03 16:29:47]

Is it expected the that mock code is used in production? I would expect it to be
test only.

[Azure Wei, 2017/01/04 09:13:27]

Moved them to ui/base:test_support.

+    "chromeos/mock_input_method_manager.h",
     "composition_text.cc",
     "composition_text.h",
     "composition_text_util_pango.cc",
     "composition_text_util_pango.h",
     "composition_underline.h",
     "ime_bridge.cc",
     "ime_bridge.h",
     "ime_engine_handler_interface.h",
     "ime_input_context_handler_interface.h",
     "infolist_entry.cc",
@@ skipping 138 matching lines @@
     libs = [ "AppKit.framework" ]
   }
 
   if (use_ozone) {
     deps += [
       "//ui/events/ozone:events_ozone_layout",
       "//ui/ozone",
     ]
   }
 }