Remove implicit conversions from scoped_refptr to T* in mojo/

mojo/application_manager/background_shell_application_loader.cc

 // 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.
 
 #include "mojo/application_manager/background_shell_application_loader.h"
 
 #include "base/bind.h"
 #include "base/run_loop.h"
 #include "mojo/application_manager/application_manager.h"
 
@@ skipping 49 matching lines @@
   if (!thread_) {
     // TODO(tim): It'd be nice if we could just have each Load call
     // result in a new thread like DynamicService{Loader, Runner}. But some
     // loaders are creating multiple ApplicationImpls (NetworkApplicationLoader)
     // sharing a delegate (etc). So we have to keep it single threaded, wait
     // for the thread to initialize, and post to the TaskRunner for subsequent
     // Load calls for now.
     thread_.reset(new base::DelegateSimpleThread(this, thread_name_));
     thread_->Start();
     message_loop_created_.Wait();
-    DCHECK(task_runner_);
+    DCHECK(task_runner_.get());
   }
 
   task_runner_->PostTask(
       FROM_HERE,
       base::Bind(
           &BackgroundShellApplicationLoader::LoadOnBackgroundThread,
           base::Unretained(this),
           manager,
           url,
           base::Owned(new ScopedMessagePipeHandle(shell_handle.Pass()))));
@@ skipping 38 matching lines @@
 void BackgroundShellApplicationLoader::OnServiceErrorOnBackgroundThread(
     ApplicationManager* manager,
     const GURL& url) {
   DCHECK(task_runner_->RunsTasksOnCurrentThread());
   if (!background_loader_)
     background_loader_ = new BackgroundLoader(loader_.get());
   background_loader_->OnServiceError(manager, url);
 }
 
 }  // namespace mojo