Remove the close button in context menu for IME menu.

chrome/common/extensions/extension_constants.cc

 // 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.
 
 #include "base/macros.h"
 #include "build/build_config.h"
 #include "chrome/common/extensions/extension_constants.h"
 
 namespace extension_urls {
 
@@ skipping 108 matching lines @@
     0x50, 0x70, 0x9d, 0xa2, 0xf9, 0xa4, 0x6f, 0x62, 0x4d, 0xb6, 0xc9, 0x31,
     0xfc, 0xf3, 0x08, 0x12, 0xff, 0x93, 0xbd, 0x62, 0x31, 0xd8, 0x1c, 0xea,
     0x1a, 0x9e, 0xf5, 0x81, 0x28, 0x7f, 0x75, 0x5e, 0xd2, 0x27, 0x7a, 0xc2,
     0x96, 0xf5, 0x9d, 0xdb, 0x18, 0xfc, 0x76, 0xdc, 0x46, 0xf0, 0x57, 0xc0,
     0x58, 0x34, 0xc8, 0x22, 0x2d, 0x2a, 0x65, 0x75, 0xa7, 0xd9, 0x08, 0x62,
     0xcd, 0x02, 0x03, 0x01, 0x00, 0x01};
 
 const int kWebstoreSignaturesPublicKeySize =
     arraysize(kWebstoreSignaturesPublicKey);
 
+#if defined(OS_CHROMEOS)
+bool IsImeMenuExtensionId(const std::string& extension_id) {
+  const char* const kImeMenuExtensionIds[] = {
+      "gjaehgfemfahhmlgpdfknkhdnemmolop", "jkghodnilhceideoidjikpgommlajknk"};

[Devlin, 2016/02/01 18:24:40]

is this git cl formatted?  (The bracket style looks a little weird to me.)  If
so, fine, if not, please do so. :)

[Azure Wei, 2016/02/02 01:08:39]

Yes. This line is generated by 'git cl format'.

+  for (const char* id : kImeMenuExtensionIds) {
+    if (extension_id == id)
+      return true;
+  }
+  return false;
+}
+#endif
 }  // namespace extension_misc