[Extensions Bindings] Add support for updateArgumentsPreValidate

extensions/renderer/api_binding_test_util.h

Index: extensions/renderer/api_binding_test_util.h
diff --git a/extensions/renderer/api_binding_test_util.h b/extensions/renderer/api_binding_test_util.h
index 3cdfdfacf380da251c740d57a265d3cc52f2285c..cc306e6a4058aefb2dad79bad7426b28963d68ea 100644
--- a/extensions/renderer/api_binding_test_util.h
+++ b/extensions/renderer/api_binding_test_util.h
@@ -78,6 +78,13 @@ void RunFunctionOnGlobalAndIgnoreResult(v8::Local<v8::Function> function,
                                         int argc,
                                         v8::Local<v8::Value> argv[]);
 
+// Like RunFunctionOnGlobal(), but returns a persistent handle for the result.
+v8::Global<v8::Value> RunFunctionOnGlobalAndReturnHandle(
+    v8::Local<v8::Function> function,
+    v8::Local<v8::Context> context,
+    int argc,
+    v8::Local<v8::Value> argv[]);
+
 // Calls the given |function| with the specified |receiver| and arguments, but
 // EXPECTs the function to throw the |expected_error|.
 void RunFunctionAndExpectError(v8::Local<v8::Function> function,