Enable basic IME functionality under Ash on Windows

win8/metro_driver/ime/ime.gypi

Index: win8/metro_driver/ime/ime.gypi
diff --git a/win8/metro_driver/ime/ime.gypi b/win8/metro_driver/ime/ime.gypi
new file mode 100644
index 0000000000000000000000000000000000000000..efa044c94ba18e5b4fd7fb54bf554a983980c2ec
--- /dev/null
+++ b/win8/metro_driver/ime/ime.gypi
@@ -0,0 +1,16 @@
+# Copyright (c) 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.
+
+{
+  'sources': [
+    'input_scope.cc',
+    'input_scope.h',
+    'text_service.cc',
+    'text_service.h',
+    'text_service_delegate.h',
+    'text_store.cc',
+    'text_store.h',
+    'text_store_delegate.h',
+  ],
+}