Begin abstracting sending of IPC from autofill core code.

components/autofill/core/browser/test_autofill_driver.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/autofill/core/browser/test_autofill_driver.h"
 
 namespace autofill {
 
 TestAutofillDriver::TestAutofillDriver(content::WebContents* web_contents)
     : content::WebContentsObserver(web_contents) {}
 
 TestAutofillDriver::~TestAutofillDriver() {}
 
 content::WebContents* TestAutofillDriver::GetWebContents() {
   return web_contents();
 }
 
+bool TestAutofillDriver::RendererIsAvailable() {
+  return true;
+}
+
+void TestAutofillDriver::SendFormDataToRenderer(int query_id,
+                                                const FormData& form_data) {
+}
+
 }  // namespace autofill