Move chrome.downloads out of experimental to dev

chrome/browser/extensions/extension_system.h

Index: chrome/browser/extensions/extension_system.h
diff --git a/chrome/browser/extensions/extension_system.h b/chrome/browser/extensions/extension_system.h
index 2ae71ccd528587444ed252ee1623fcd089963646..756703ecf4947c89b09a9f4168296247cb8ba172 100644
--- a/chrome/browser/extensions/extension_system.h
+++ b/chrome/browser/extensions/extension_system.h
@@ -14,6 +14,7 @@
 #include "chrome/common/extensions/extension_constants.h"
 
 class ExtensionDevToolsManager;
+class ExtensionDownloadsEventRouter;
 class ExtensionEventRouter;
 class ExtensionInfoMap;
 class ExtensionMessageService;
@@ -190,6 +191,7 @@ class ExtensionSystemImpl : public ExtensionSystem {
   // access to the ResourceContext owned by |io_data_|.
   scoped_ptr<ExtensionProcessManager> extension_process_manager_;
   scoped_ptr<extensions::AlarmManager> alarm_manager_;
+  scoped_ptr<ExtensionDownloadsEventRouter> downloads_event_router_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionSystemImpl);
 };