Remove Hangul IME with migration.

chrome/browser/chromeos/preferences.cc

Index: chrome/browser/chromeos/preferences.cc
diff --git a/chrome/browser/chromeos/preferences.cc b/chrome/browser/chromeos/preferences.cc
index 5a2eec73175e77d0867d2542b82d7093f0e69df2..53f2583b1336398b4236e5bf3526149395e975a0 100644
--- a/chrome/browser/chromeos/preferences.cc
+++ b/chrome/browser/chromeos/preferences.cc
@@ -766,9 +766,13 @@ void Preferences::NotifyPrefChanged(const std::string* pref_name) {
   }
   if (!pref_name ||
       *pref_name == prefs::kLanguageHangulKeyboard) {
-    SetLanguageConfigString(language_prefs::kHangulSectionName,
-                            language_prefs::kHangulKeyboardConfigName,
-                            hangul_keyboard_.GetValue());
+    std::vector<std::string> new_input_method_ids;
+    if (input_method_manager_->MigrateKoreanKeyboard(
+            hangul_keyboard_.GetValue(),
+            &new_input_method_ids)) {
+      preload_engines_.SetValue(JoinString(new_input_method_ids, ','));
+      hangul_keyboard_.SetValue("dummy_value_already_migrated");
+    }
   }
   if (!pref_name || *pref_name == prefs::kLanguageHangulHanjaBindingKeys) {

[Shu Chen, 2013/06/28 03:06:54]

this is no change?

[Seigo Nonaka, 2013/06/28 03:28:51]

Yes, above change is for migration.
All configuration for input method will be managed by extension side. 

I will remove all configuration items in Chrome in few days after migration.

On 2013/06/28 03:06:54, Shu Chen wrote:

[satorux1, 2013/07/01 03:33:45]

Please file a bug and add the bug URL here.

[Seigo Nonaka, 2013/07/01 04:00:03]

Done.

     SetLanguageConfigString(language_prefs::kHangulSectionName,