Move the tests in ui/chromeos to a new target: ui_chromeos_unittests

ui/base/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/ui.gni")
 
 if (is_android) {
   import("//build/config/android/config.gni")
   import("//build/config/android/rules.gni")
 }
@@ skipping 881 matching lines @@
       "dragdrop/os_exchange_data_unittest.cc"
     ]
 
     deps += [
       "//ui/events",
       "//ui/events/platform",
     ]
   }
 
   if (is_chromeos) {
-    sources += [
-      # TODO(pkotwicz): Move tests to their own target (crbug.com/432538) 
-      "../chromeos/ime/candidate_view_unittest.cc",
-      "../chromeos/ime/candidate_window_view_unittest.cc",
-      "../chromeos/ime/input_method_menu_item_unittest.cc",
-      "../chromeos/ime/input_method_menu_manager_unittest.cc",
-      "../chromeos/network/network_state_notifier_unittest.cc",
-      "../chromeos/touch_exploration_controller_unittest.cc",
-    ]
     sources -= [
       "dragdrop/os_exchange_data_provider_aurax11_unittest.cc",
       "x/selection_requestor_unittest.cc",
     ]
     deps += [
       "//chromeos",
-      "//ui/aura:test_support",
-      "//ui/chromeos/resources",
-      "//ui/chromeos/strings",
-      "//ui/chromeos:ui_chromeos",
-      "//ui/events:gesture_detection",
-      "//ui/message_center:message_center",
-      "//ui/views",
-      "//ui/views:test_support",
     ]
   }
 }
 }
 # TODO(GYP) Mac (ui_unittest_bundle) and Android (ui_unittests_apk).