Remove the close button in context menu for IME menu.

chrome/browser/ui/ash/launcher/launcher_context_menu.cc

Index: chrome/browser/ui/ash/launcher/launcher_context_menu.cc
diff --git a/chrome/browser/ui/ash/launcher/launcher_context_menu.cc b/chrome/browser/ui/ash/launcher/launcher_context_menu.cc
index b72aab12ab06d3374ed5ee12ac00b92f1f8737a5..b490219056da1a679495b3b09b79bfd8decc3ac4 100644
--- a/chrome/browser/ui/ash/launcher/launcher_context_menu.cc
+++ b/chrome/browser/ui/ash/launcher/launcher_context_menu.cc
@@ -151,8 +151,16 @@ void LauncherContextMenu::Init() {
             l10n_util::GetStringUTF16(IDS_LAUNCHER_CONTEXT_MENU_PIN));
       }
       if (controller_->IsOpen(item_.id)) {
+#if defined(OS_CHROMEOS)
+        if (!extension_misc::IsImeMenuExtensionId(
+                controller_->GetAppIDForShelfID(item_.id))) {
+          AddItem(MENU_CLOSE,
+                  l10n_util::GetStringUTF16(IDS_LAUNCHER_CONTEXT_MENU_CLOSE));
+        }
+#else
         AddItem(MENU_CLOSE,
                 l10n_util::GetStringUTF16(IDS_LAUNCHER_CONTEXT_MENU_CLOSE));

[stevenjb, 2016/01/28 18:45:04]

nit: Instead of duplicating this, I would suggest:
bool show_close_button = true;
#if CHROMEOS
  if (...IsIme...)  show_close_button = false;
#endif
  if (show_close_button)
    AddItem(...)

[Azure Wei, 2016/01/29 02:43:59]

Done.

+#endif
       }
     }
     AddSeparator(ui::NORMAL_SEPARATOR);