Small test and ChromeDriver fixes to enable additional tests.

chrome/test/webdriver/webdriver_key_converter.h

 // Copyright (c) 2011 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 CHROME_TEST_WEBDRIVER_WEBDRIVER_KEY_CONVERTER_H_
 #define CHROME_TEST_WEBDRIVER_WEBDRIVER_KEY_CONVERTER_H_
 #pragma once
 
 #include <string>
 #include <vector>
 
 #include "base/string16.h"
 #include "chrome/test/webdriver/automation.h"
 #include "ui/base/keycodes/keyboard_codes.h"
 
 namespace webdriver {
 
 // Convenience functions for creating |WebKeyEvent|s. Used by unittests.
 WebKeyEvent CreateKeyDownEvent(ui::KeyboardCode key_code, int modifiers);
 WebKeyEvent CreateKeyUpEvent(ui::KeyboardCode key_code, int modifiers);
 WebKeyEvent CreateCharEvent(const std::string& unmodified_text,
                             const std::string& modified_text,
                             int modifiers);
 
-// Converts keys into appropriate |WebKeyEvent|s.
-void ConvertKeysToWebKeyEvents(const string16& keys,
-                               std::vector<WebKeyEvent>* key_events);
+// Converts keys into appropriate |WebKeyEvent|s. This will do a best effort
+// conversion. However, if the input is invalid it will return false and set
+// an error message.
+bool ConvertKeysToWebKeyEvents(const string16& keys,
+                               std::vector<WebKeyEvent>* key_events,
+                               std::string* error_msg);
 
 }  // namespace webdriver
 
 #endif  // CHROME_TEST_WEBDRIVER_WEBDRIVER_KEY_CONVERTER_H_