Remove Windows support from the EDK.

mojo/edk/system/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("../mojo_edk.gni")
 import("//testing/test.gni")
 
 if (is_android) {
   import("//build/config/android/config.gni")
   import("//build/config/android/rules.gni")
@@ skipping 76 matching lines @@
     "mutex.h",
     "options_validation.h",
     "platform_handle_dispatcher.cc",
     "platform_handle_dispatcher.h",
     "process_identifier.h",
     "proxy_message_pipe_endpoint.cc",
     "proxy_message_pipe_endpoint.h",
     "raw_channel.cc",
     "raw_channel.h",
     "raw_channel_posix.cc",
-    "raw_channel_win.cc",
     "remote_consumer_data_pipe_impl.cc",
     "remote_consumer_data_pipe_impl.h",
     "remote_data_pipe_ack.h",
     "remote_producer_data_pipe_impl.cc",
     "remote_producer_data_pipe_impl.h",
     "shared_buffer_dispatcher.cc",
     "shared_buffer_dispatcher.h",
     "simple_dispatcher.cc",
     "simple_dispatcher.h",
     "slave_connection_manager.cc",
@@ skipping 130 matching lines @@
   deps = [
     ":system",
     ":test_utils",
     "../test:test_support",
     "//base",
     "//base/test:test_support",
     "//base/test:test_support_perf",
     "//testing/gtest",
   ]
 }