Run input_method_bridge_unittest on Mac, remove unused DummyInputMethodDelegate

ui/views/views.gyp

 # Copyright (c) 2012 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.
 {
   'variables': {
     'chromium_code': 1,
     # Sources lists shared with GN build.
     'views_sources': [
       'accessibility/native_view_accessibility.cc',
       'accessibility/native_view_accessibility.h',
@@ skipping 880 matching lines @@
         ['use_x11==1', {
           'dependencies': [
             '../events/platform/x11/x11_events_platform.gyp:x11_events_platform',
           ],
         }],
         ['OS=="mac"', {
           # views_unittests not yet compiling on Mac. http://crbug.com/378134
           'sources!': [
             'bubble/bubble_window_targeter_unittest.cc',
             'controls/native/native_view_host_unittest.cc',
-            'ime/input_method_bridge_unittest.cc',
             'widget/window_reorderer_unittest.cc',
           ]
         }],
       ],
     },  # target_name: views_unittests
   ],  # targets
   'conditions': [
     ['OS=="mac"', {
       'targets': [
         {
@@ skipping 24 matching lines @@
                 '../aura/aura.gyp:aura',
                 '../wm/wm.gyp:wm',
               ],
             }],
           ],
         },  # target_name: macviews_interactive_ui_tests
       ],  # targets
     }],
   ],  # conditions
 }