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

chrome/browser/extensions/extension_host.cc

 // Copyright (c) 2006-2009 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.
 
 #include "chrome/browser/extensions/extension_host.h"
 
 #include <list>
 
 #include "app/resource_bundle.h"
 #include "base/message_loop.h"
@@ skipping 328 matching lines @@
   render_view_host()->JavaScriptMessageBoxClosed(reply_msg, true, L"");
 }
 
 WebPreferences ExtensionHost::GetWebkitPrefs() {
   PrefService* prefs = render_view_host()->process()->profile()->GetPrefs();
   const bool kIsDomUI = true;
   return RenderViewHostDelegateHelper::GetWebkitPrefs(prefs, kIsDomUI);
 }
 
 void ExtensionHost::ProcessDOMUIMessage(const std::string& message,
-                                        const std::string& content,
+                                        const Value* content,
                                         int request_id,
                                         bool has_callback) {
   if (extension_function_dispatcher_.get()) {
     extension_function_dispatcher_->HandleRequest(message, content, request_id,
                                                   has_callback);
   }
 }
 
 RenderViewHostDelegate::View* ExtensionHost::GetViewDelegate() {
   return this;
@@ skipping 136 matching lines @@
     window_id = ExtensionTabUtil::GetWindowId(
         const_cast<ExtensionHost* >(this)->GetBrowser());
   } else if (extension_host_type_ == ViewType::EXTENSION_BACKGROUND_PAGE) {
     // Background page is not attached to any browser window, so pass -1.
     window_id = -1;
   } else {
     NOTREACHED();
   }
   return window_id;
 }