Add a switch to TestRunner to enable/disable mock spell checker

components/test_runner/test_runner.h

 // Copyright 2014 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.
 
 #ifndef COMPONENTS_TEST_RUNNER_TEST_RUNNER_H_
 #define COMPONENTS_TEST_RUNNER_TEST_RUNNER_H_
 
 #include <stdint.h>
 
 #include <deque>
@@ skipping 445 matching lines @@
   void DumpDragImage();
 
   // Sets a flag that tells the WebViewTestProxy to dump the default navigation
   // policy passed to the decidePolicyForNavigation callback.
   void DumpNavigationPolicy();
 
   // Controls whether console messages produced by the page are dumped
   // to test output.
   void SetDumpConsoleMessages(bool value);
 
+  // Controls whether the mock spell checker is enabled.
+  void SetMockSpellCheckerEnabled(bool enabled);
+
   ///////////////////////////////////////////////////////////////////////////
   // Methods interacting with the WebViewTestProxy
 
   ///////////////////////////////////////////////////////////////////////////
   // Methods forwarding to the WebTestDelegate
 
   // Shows DevTools window.
   void ShowWebInspector(const std::string& str,
                         const std::string& frontend_url);
   void CloseWebInspector();
@@ skipping 163 matching lines @@
   bool is_web_platform_tests_mode_;
 
   base::WeakPtrFactory<TestRunner> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(TestRunner);
 };
 
 }  // namespace test_runner
 
 #endif  // COMPONENTS_TEST_RUNNER_TEST_RUNNER_H_