Cleanup: Remove more unneeded browser_thread.h includes.

chrome/browser/extensions/api/tab_capture/tab_capture_registry.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 CHROME_BROWSER_EXTENSIONS_API_TAB_CAPTURE_TAB_CAPTURE_REGISTRY_H_
 #define CHROME_BROWSER_EXTENSIONS_API_TAB_CAPTURE_TAB_CAPTURE_REGISTRY_H_
 
 #include <map>
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "chrome/browser/media/media_internals.h"
 #include "chrome/browser/media/media_internals_observer.h"
 #include "chrome/browser/profiles/profile_keyed_service.h"
 #include "chrome/common/extensions/api/tab_capture.h"
-#include "content/public/browser/browser_thread.h"
 #include "content/public/browser/media_request_state.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/common/media_stream_request.h"
 
 class Profile;
 
 namespace extensions {
 
 namespace tab_capture = extensions::api::tab_capture;
@@ skipping 71 matching lines @@
   content::NotificationRegistrar registrar_;
   Profile* const profile_;
   DeviceCaptureRequestMap requests_;
 
   DISALLOW_COPY_AND_ASSIGN(TabCaptureRegistry);
 };
 
 }  // namespace extension
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_TAB_CAPTURE_TAB_CAPTURE_REGISTRY_H_