Include a role description string in node info for Android accessibility.

android_webview/common/aw_content_client.cc

Index: android_webview/common/aw_content_client.cc
diff --git a/android_webview/common/aw_content_client.cc b/android_webview/common/aw_content_client.cc
index 7dcd02866e9917231bf6a5405a9c29821190de42..73f2a3851d5885f8078e1e6dd23af1f1eb9cde27 100644
--- a/android_webview/common/aw_content_client.cc
+++ b/android_webview/common/aw_content_client.cc
@@ -49,6 +49,12 @@ base::string16 AwContentClient::GetLocalizedString(int message_id) const {
   return l10n_util::GetStringUTF16(message_id);
 }
 
+base::string16 AwContentClient::GetLocalizedStringF(
+    int message_id,
+    const base::string16& string0) const {
+  return l10n_util::GetStringFUTF16(message_id, string0);
+}
+
 base::StringPiece AwContentClient::GetDataResource(
     int resource_id,
     ui::ScaleFactor scale_factor) const {