Implement sendKeys webdriver API in ChromeDriver.

chrome/test/webdriver/commands/command.cc

 // 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.
 
 #include "chrome/test/webdriver/commands/command.h"
 
 namespace webdriver {
 
 // Error message taken from:
 // http://code.google.com/p/selenium/wiki/JsonWireProtocol#Response_Status_Codes
@@ skipping 47 matching lines @@
 bool Command::GetBooleanParameter(const std::string& key,
                                   bool* out) const {
   return parameters_.get() != NULL && parameters_->GetBoolean(key, out);
 }
 
 bool Command::GetIntegerParameter(const std::string& key,
                                   int* out) const {
   return parameters_.get() != NULL && parameters_->GetInteger(key, out);
 }
 
+bool Command::GetListParameter(const std::string& key,
+                               ListValue** out) const {
+  return parameters_.get() != NULL && parameters_->GetList(key, out);
+}
+
 }  // namespace webdriver