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

extensions/shell/common/shell_content_client.h

Index: extensions/shell/common/shell_content_client.h
diff --git a/extensions/shell/common/shell_content_client.h b/extensions/shell/common/shell_content_client.h
index f105511dc130be05099f5ee0fa4b5e580c0ff3b6..46d424a841f70493b9e4cc4b76b9239b160012a9 100644
--- a/extensions/shell/common/shell_content_client.h
+++ b/extensions/shell/common/shell_content_client.h
@@ -23,6 +23,9 @@ class ShellContentClient : public content::ContentClient {
                             std::vector<std::string>* saveable_shemes) override;
   std::string GetUserAgent() const override;
   base::string16 GetLocalizedString(int message_id) const override;
+  base::string16 GetLocalizedStringF(
+      int message_id,
+      const base::string16& string0) const override;
   base::StringPiece GetDataResource(
       int resource_id,
       ui::ScaleFactor scale_factor) const override;