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

chrome/browser/chromeos/input_method/input_method_util.cc

Index: chrome/browser/chromeos/input_method/input_method_util.cc
diff --git a/chrome/browser/chromeos/input_method/input_method_util.cc b/chrome/browser/chromeos/input_method/input_method_util.cc
index e11dd25e34e545c664398cb4c900c5e7b21f1c90..b5c3fb4cb1eef9e0ac596714b2c5516688f2fb24 100644
--- a/chrome/browser/chromeos/input_method/input_method_util.cc
+++ b/chrome/browser/chromeos/input_method/input_method_util.cc
@@ -611,11 +611,40 @@ std::string InputMethodUtil::GetLanguageDefaultInputMethodId(
   return std::string();
 }
 
+bool InputMethodUtil::MigrateXkbInputMethods(
+    std::vector<std::string>* input_method_ids) {
+  bool rewritten = false;
+  std::vector<std::string>& ids = *input_method_ids;
+  for (size_t i = 0; i < ids.size(); ++i) {
+    std::string id =
+        extension_ime_util::GetInputMethodIDByKeyboardLayout(ids[i]);
+    if (id != ids[i]) {
+      ids[i] = id;
+      rewritten = true;
+    }
+  }
+  if (rewritten) {
+    // Removes the duplicates.
+    size_t t = 0, j = 0;
+    for (size_t i = 0; i < ids.size(); ++i) {
+      for (j = 0; j < t; ++j) {
+        if (ids[i] == ids[j])
+          break;
+      }
+      if (t == j) // no dup.
+        ids[t++] = ids[i];
+    }
+    ids.resize(t);
+  }
+  return rewritten;
+}
+
 void InputMethodUtil::UpdateHardwareLayoutCache() {
   DCHECK(thread_checker_.CalledOnValidThread());
   hardware_layouts_.clear();
   hardware_login_layouts_.clear();
   Tokenize(delegate_->GetHardwareKeyboardLayouts(), ",", &hardware_layouts_);
+  MigrateXkbInputMethods(&hardware_layouts_);
 
   for (size_t i = 0; i < hardware_layouts_.size(); ++i) {
     if (IsLoginKeyboard(hardware_layouts_[i]))
@@ -682,14 +711,15 @@ InputMethodDescriptor InputMethodUtil::GetFallbackInputMethodDescriptor() {
   layouts.push_back("us");
   std::vector<std::string> languages;
   languages.push_back("en-US");
-  return InputMethodDescriptor("xkb:us::eng",
-                               "",
-                               "US",
-                               layouts,
-                               languages,
-                               true,  // login keyboard.
-                               GURL(),  // options page, not available.
-                               GURL()); // input view page, not available.
+  return InputMethodDescriptor(
+      extension_ime_util::GetInputMethodIDByKeyboardLayout("xkb:us::eng"),
+      "",
+      "US",
+      layouts,
+      languages,
+      true,  // login keyboard.
+      GURL(),  // options page, not available.
+      GURL()); // input view page, not available.
 }
 
 void InputMethodUtil::ReloadInternalMaps() {