Modify extension request IPC messages to pass a ListValue instead of a string.

chrome/browser/automation/automation_extension_function.h

 // Copyright (c) 2009 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.
 
 // Defines AutomationExtensionFunction.
 
 #ifndef CHROME_BROWSER_AUTOMATION_AUTOMATION_EXTENSION_FUNCTION_H_
 #define CHROME_BROWSER_AUTOMATION_AUTOMATION_EXTENSION_FUNCTION_H_
 
 #include <string>
 
 #include "chrome/browser/extensions/extension_function.h"
 
 class RenderViewHost;
 
 // An extension function that pipes the extension API call through the
 // automation interface, so that extensions can be tested using UITests.
 class AutomationExtensionFunction : public ExtensionFunction {
  public:
   AutomationExtensionFunction() { }
 
   // ExtensionFunction implementation.
-  virtual void SetArgs(const std::string& args);
+  virtual void SetArgs(const Value* args);
   virtual const std::string GetResult();
   virtual const std::string GetError();
   virtual void Run();
 
   static ExtensionFunction* Factory();
 
   // If enabled, we set an instance of this function as the functor
   // for all function names in ExtensionFunctionFactoryRegistry.
   // If disabled, we restore the initial functions.
   static void SetEnabled(bool enabled);
 
   // Intercepts messages sent from the external host to check if they
   // are actually responses to extension API calls.  If they are, redirects
   // the message to view_host->SendExtensionResponse and returns true,
   // otherwise returns false to indicate the message was not intercepted.
   static bool InterceptMessageFromExternalHost(RenderViewHost* view_host,
                                                const std::string& message,
                                                const std::string& origin,
                                                const std::string& target);
 
  private:
   static bool enabled_;
   std::string args_;
   DISALLOW_COPY_AND_ASSIGN(AutomationExtensionFunction);
 };
 
 #endif  // CHROME_BROWSER_AUTOMATION_AUTOMATION_EXTENSION_FUNCTION_H_