First cut at "content handling" support in Mojo.

mojo/shell/dbus_service_loader_linux.h

 // Copyright 2014 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 MOJO_SHELL_DBUS_SERVICE_LOADER_H_
 #define MOJO_SHELL_DBUS_SERVICE_LOADER_H_
 
 #include <map>
 
 #include "base/macros.h"
@@ skipping 43 matching lines @@
   // by the DBus object path of an object that implements the org.chromium.Mojo
   // interface as discussed above.
   //
   // Example:
   //   dbus:org.chromium.EchoService/org/chromium/MojoImpl
   //
   // This will tell DBusServiceLoader to reach out to a service with
   // the name "org.chromium.EchoService" and invoke the method
   // "org.chromium.Mojo.ConnectChannel" on the object exported at
   // "/org/chromium/MojoImpl".
-  virtual void LoadService(ServiceManager* manager,
-                           const GURL& url,
-                           ScopedMessagePipeHandle shell_handle) OVERRIDE;
+  virtual void Load(ServiceManager* manager,
+                    const GURL& url,
+                    scoped_refptr<LoadCallbacks> callbacks) OVERRIDE;
 
   virtual void OnServiceError(ServiceManager* manager, const GURL& url)
       OVERRIDE;
 
  private:
   class LoadContext;
 
   // Tosses out connection-related state to service at given URL.
   void ForgetService(const GURL& url);
 
   Context* const context_;
   scoped_refptr<dbus::Bus> bus_;
 
   typedef std::map<GURL, LoadContext*> LoadContextMap;
   LoadContextMap url_to_load_context_;
 
   DISALLOW_COPY_AND_ASSIGN(DBusServiceLoader);
 };
 
 }  // namespace shell
 }  // namespace mojo
 
 #endif  // MOJO_SHELL_DBUS_SERVICE_LOADER_H_