mojo: Fix double character inserts on Windows by removing a Linux hack.

mojo/mojo.gyp

 # Copyright 2013 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.
 
 {
   'target_defaults': {
     'conditions': [
       ['mojo_shell_debug_url != ""', {
         'defines': [
           'MOJO_SHELL_DEBUG=1',
@@ skipping 488 matching lines @@
             '../third_party/icu/icu.gyp:icui18n',
             '../third_party/icu/icu.gyp:icuuc',
             '../ui/aura/aura.gyp:aura',
             '../ui/base/ui_base.gyp:ui_base',
             '../ui/views/views.gyp:views',
             '../ui/wm/wm.gyp:wm',
             'mojo_aura_support',
             'mojo_views_support_internal',
           ],
           'sources': [
+            'views/input_method_mojo_linux.cc',
+            'views/input_method_mojo_linux.h',
             'views/native_widget_view_manager.cc',
             'views/native_widget_view_manager.h',
             'views/views_init.cc',
             'views/views_init.h',
           ],
         },
         {
           'target_name': 'mojo_views_support_internal',
           'type': '<(component)',
           'dependencies': [
@@ skipping 86 matching lines @@
             },
           ],
           'dependency': [
             'mojo_python',
           ],
         },
       ],
     }],
   ],
 }