Support comma separated hardware keyboard layout.

chrome/browser/chromeos/input_method/input_method_delegate_impl.cc

Index: chrome/browser/chromeos/input_method/input_method_delegate_impl.cc
diff --git a/chrome/browser/chromeos/input_method/input_method_delegate_impl.cc b/chrome/browser/chromeos/input_method/input_method_delegate_impl.cc
index ddfbe69dea6b4f17f41d8981ef514b9847453d28..2575ca8dd2edd56f4333cb6448286fc8ce407c45 100644
--- a/chrome/browser/chromeos/input_method/input_method_delegate_impl.cc
+++ b/chrome/browser/chromeos/input_method/input_method_delegate_impl.cc
@@ -6,6 +6,7 @@
 
 #include "base/logging.h"
 #include "base/prefs/pref_service.h"
+#include "base/strings/string_util.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/common/pref_names.h"
 #include "ui/base/l10n/l10n_util.h"
@@ -15,15 +16,18 @@ namespace input_method {
 
 InputMethodDelegateImpl::InputMethodDelegateImpl() {}
 
-std::string InputMethodDelegateImpl::GetHardwareKeyboardLayout() const {
-  if (g_browser_process) {
-    PrefService* local_state = g_browser_process->local_state();
-    if (local_state)
-      return local_state->GetString(prefs::kHardwareKeyboardLayout);
-  }
-  // This shouldn't happen but just in case.
-  DVLOG(1) << "Local state is not yet ready.";
-  return std::string();
+void InputMethodDelegateImpl::GetHardwareKeyboardLayout(
+    std::vector<std::string>* out) const {
+  DCHECK(out);
+  out->clear();
+  if (!g_browser_process)
+    return;
+
+  PrefService* local_state = g_browser_process->local_state();
+  if (!local_state)
+    return;
+
+  Tokenize(local_state->GetString(prefs::kHardwareKeyboardLayout), ",", out);
 }
 
 base::string16 InputMethodDelegateImpl::GetLocalizedString(