Mojo C++ bindings: add a new mode to generator to use native STL/WTF types

mojo/public/cpp/bindings/tests/binding_callback_unittest.cc

Index: mojo/public/cpp/bindings/tests/binding_callback_unittest.cc
diff --git a/mojo/public/cpp/bindings/tests/binding_callback_unittest.cc b/mojo/public/cpp/bindings/tests/binding_callback_unittest.cc
index ff0973e6a88ec84733f01cd2dd3807365e7311ad..02b082a5354ed0cdb4b21aa3d669dd781fd3f0eb 100644
--- a/mojo/public/cpp/bindings/tests/binding_callback_unittest.cc
+++ b/mojo/public/cpp/bindings/tests/binding_callback_unittest.cc
@@ -87,13 +87,13 @@ class InterfaceImpl : public sample::Provider {
     }
   }
 
-  void EchoString(const String& a,
+  void EchoString(const std::string& a,
                   const EchoStringCallback& callback) override {
     CHECK(false) << "Not implemented.";
   }
 
-  void EchoStrings(const String& a,
-                   const String& b,
+  void EchoStrings(const std::string& a,
+                   const std::string& b,
                    const EchoStringsCallback& callback) override {
     CHECK(false) << "Not implemented.";
   }