Pass Callback to TaskRunner by value and consume it on invocation (1)

content/public/browser/content_browser_client.h

 // Copyright (c) 2012 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 CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_
 #define CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_
 
 #include <stddef.h>
 
 #include <map>
 #include <memory>
 #include <string>
 #include <utility>
 #include <vector>
 
-#include "base/callback_forward.h"
+#include "base/callback.h"
 #include "base/task_scheduler/task_scheduler.h"
 #include "base/values.h"
 #include "build/build_config.h"
 #include "content/public/browser/certificate_request_result_type.h"
 #include "content/public/browser/navigation_throttle.h"
 #include "content/public/common/content_client.h"
 #include "content/public/common/media_stream_request.h"
 #include "content/public/common/resource_type.h"
 #include "content/public/common/service_info.h"
 #include "content/public/common/socket_permission_request.h"
@@ skipping 126 matching lines @@
       const MainFunctionParams& parameters);
 
   // Allows the embedder to change the default behavior of
   // BrowserThread::PostAfterStartupTask to better match whatever
   // definition of "startup" the embedder has in mind. This may be
   // called on any thread.
   // Note: see related BrowserThread::PostAfterStartupTask.
   virtual void PostAfterStartupTask(
       const tracked_objects::Location& from_here,
       const scoped_refptr<base::TaskRunner>& task_runner,
-      const base::Closure& task);
+      base::Closure task);
 
   // Allows the embedder to indicate whether it considers startup to be
   // complete. May be called on any thread. This should be called on a one-off
   // basis; if you need to poll this function constantly, use the above
   // PostAfterStartupTask() API instead.
   virtual bool IsBrowserStartupComplete();
 
   // If content creates the WebContentsView implementation, it will ask the
   // embedder to return an (optional) delegate to customize it. The view will
   // own the delegate.
@@ skipping 654 matching lines @@
   virtual bool ShouldRedirectDOMStorageTaskRunner();
 
   // If this returns true, all BrowserThreads (but UI/IO) that support it on
   // this platform will experimentally be redirected to TaskScheduler.
   virtual bool RedirectNonUINonIOBrowserThreadsToTaskScheduler();
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_