[IME] migrate the xkb ID to extension based xkb ID.

chromeos/ime/component_extension_ime_manager.cc

Index: chromeos/ime/component_extension_ime_manager.cc
diff --git a/chromeos/ime/component_extension_ime_manager.cc b/chromeos/ime/component_extension_ime_manager.cc
index b31470b52089e1fb9d39477b89327f2b5ff435d2..2319f9adeeddf07fed524604a5e90dbbf8fbf651 100644
--- a/chromeos/ime/component_extension_ime_manager.cc
+++ b/chromeos/ime/component_extension_ime_manager.cc
@@ -10,6 +10,77 @@
 
 namespace chromeos {
 
+namespace {
+
+const char* kLoginLayoutWhitelist[] = {
+  "be",
+  "be",
+  "be",
+  "br",
+  "ca",
+  "ca(eng)",
+  "ca(multix)",
+  "ch",
+  "ch(fr)",
+  "cz",
+  "cz(qwerty)",
+  "de",
+  "de(neo)",
+  "dk",
+  "ee",
+  "es",
+  "es(cat)",
+  "fi",
+  "fr",
+  "gb(dvorak)",
+  "gb(extd)",
+  "hr",
+  "hu",
+  "is",
+  "it",
+  "jp",
+  "latam",
+  "lt",
+  "lv(apostrophe)",
+  "no",
+  "pl",
+  "pt",
+  "ro",
+  "se",
+  "si",
+  "tr",
+  "us",
+  "us(altgr-intl)",
+  "us(colemak)",
+  "us(dvorak)",
+  "us(intl)"
+};
+
+bool WhitelistContains(const char* s) {
+  int from = 0, to = arraysize(kLoginLayoutWhitelist);
+  while (from < to) {
+    int mid = from + (to - from) / 2;
+    int cmp = strcmp(s, kLoginLayoutWhitelist[mid]);
+    if (cmp > 0)
+      from = mid + 1;
+    else if (cmp < 0)
+      to = mid - 1;
+    else
+      return true;
+  }
+  return false;
+}
+
+bool IsInLoginLayoutWhitelist(std::vector<std::string>& layouts) {
+  for (size_t i = 0; i < layouts.size(); ++i) {
+    if (WhitelistContains(layouts[i].c_str()))
+      return true;
+  }
+  return false;
+}
+
+} // namespace
+
 ComponentExtensionEngine::ComponentExtensionEngine() {
 }
 
@@ -134,15 +205,18 @@ input_method::InputMethodDescriptors
           extension_ime_util::GetComponentInputMethodID(
               component_extension_imes_[i].id,
               component_extension_imes_[i].engines[j].engine_id);
+      std::vector<std::string>& layouts =
+          component_extension_imes_[i].engines[j].layouts;
       result.push_back(
           input_method::InputMethodDescriptor(
               input_method_id,
               component_extension_imes_[i].engines[j].display_name,
               std::string(), // TODO(uekawa): Set short name.
-              component_extension_imes_[i].engines[j].layouts,
+              layouts,
               component_extension_imes_[i].engines[j].language_codes,
               // Enables extension based xkb keyboards on login screen.
-              extension_ime_util::IsKeyboardLayoutExtension(input_method_id),
+              extension_ime_util::IsKeyboardLayoutExtension(
+                  input_method_id) && IsInLoginLayoutWhitelist(layouts),
               component_extension_imes_[i].options_page_url,
               component_extension_imes_[i].input_view_url));
     }