components: Remove use of MessageLoopProxy and deprecated MessageLoop APIs

components/autofill/core/browser/webdata/autofill_webdata_backend_impl.h

 // Copyright 2013 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 COMPONENTS_AUTOFILL_CORE_BROWSER_WEBDATA_AUTOFILL_WEBDATA_BACKEND_IMPL_H_
 #define COMPONENTS_AUTOFILL_CORE_BROWSER_WEBDATA_AUTOFILL_WEBDATA_BACKEND_IMPL_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/ref_counted_delete_on_message_loop.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/observer_list.h"
 #include "base/supports_user_data.h"
 #include "components/autofill/core/browser/webdata/autofill_webdata.h"
 #include "components/autofill/core/browser/webdata/autofill_webdata_backend.h"
 #include "components/autofill/core/common/form_field_data.h"
 #include "components/webdata/common/web_data_results.h"
 #include "components/webdata/common/web_data_service_base.h"
 #include "components/webdata/common/web_data_service_consumer.h"
 #include "components/webdata/common/web_database.h"
 
 namespace base {
-class MessageLoopProxy;
+class SingleThreadTaskRunner;
 }
 
 class WebDatabaseBackend;
 
 namespace autofill {
 
 class AutofillProfile;
 class AutofillWebDataServiceObserverOnDBThread;
 class CreditCard;
 
 // Backend implentation for the AutofillWebDataService. This class runs on the
 // DB thread, as it handles reads and writes to the WebDatabase, and functions
 // in it should only be called from that thread. Most functions here are just
 // the implementations of the corresponding functions in the Autofill
 // WebDataService.
 // This class is destroyed on the DB thread.
 class AutofillWebDataBackendImpl
     : public base::RefCountedDeleteOnMessageLoop<AutofillWebDataBackendImpl>,
       public AutofillWebDataBackend {
  public:
   // |web_database_backend| is used to access the WebDatabase directly for
   // Sync-related operations. |ui_thread| and |db_thread| are the threads that
   // this class uses as its UI and DB threads respectively.
   // |on_changed_callback| is a closure which can be used to notify the UI
   // thread of changes initiated by Sync (this callback may be called multiple
   // times).
   AutofillWebDataBackendImpl(
       scoped_refptr<WebDatabaseBackend> web_database_backend,
-      scoped_refptr<base::MessageLoopProxy> ui_thread,
-      scoped_refptr<base::MessageLoopProxy> db_thread,
+      scoped_refptr<base::SingleThreadTaskRunner> ui_thread,
+      scoped_refptr<base::SingleThreadTaskRunner> db_thread,
       const base::Closure& on_changed_callback);
 
   // AutofillWebDataBackend implementation.
   void AddObserver(AutofillWebDataServiceObserverOnDBThread* observer) override;
   void RemoveObserver(
       AutofillWebDataServiceObserverOnDBThread* observer) override;
   WebDatabase* GetDatabase() override;
   void RemoveExpiredFormElements() override;
   void NotifyOfMultipleAutofillChanges() override;
 
@@ skipping 117 matching lines @@
   // reference-counted objects.
   class SupportsUserDataAggregatable : public base::SupportsUserData {
    public:
     SupportsUserDataAggregatable() {}
     ~SupportsUserDataAggregatable() override {}
 
    private:
     DISALLOW_COPY_AND_ASSIGN(SupportsUserDataAggregatable);
   };
 
-  // The MessageLoopProxy that this class uses as its UI thread.
-  scoped_refptr<base::MessageLoopProxy> ui_thread_;
+  // The task runner that this class uses as its UI thread.
+  scoped_refptr<base::SingleThreadTaskRunner> ui_thread_;
 
-  // The MessageLoopProxy that this class uses as its DB thread.
-  scoped_refptr<base::MessageLoopProxy> db_thread_;
+  // The task runner that this class uses as its DB thread.
+  scoped_refptr<base::SingleThreadTaskRunner> db_thread_;
 
   // Storage for user data to be accessed only on the DB thread. May
   // be used e.g. for SyncableService subclasses that need to be owned
   // by this object. Is created on first call to |GetDBUserData()|.
   scoped_ptr<SupportsUserDataAggregatable> user_data_;
 
   WebDatabase::State RemoveExpiredFormElementsImpl(WebDatabase* db);
 
   // Callbacks to ensure that sensitive info is destroyed if request is
   // cancelled.
   void DestroyAutofillProfileResult(const WDTypedResult* result);
   void DestroyAutofillCreditCardResult(const WDTypedResult* result);
 
   ObserverList<AutofillWebDataServiceObserverOnDBThread> db_observer_list_;
 
   // WebDatabaseBackend allows direct access to DB.
   // TODO(caitkp): Make it so nobody but us needs direct DB access anymore.
   scoped_refptr<WebDatabaseBackend> web_database_backend_;
 
   base::Closure on_changed_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(AutofillWebDataBackendImpl);
 };
 
 }  // namespace autofill
 
 #endif  // COMPONENTS_AUTOFILL_CORE_BROWSER_WEBDATA_AUTOFILL_WEBDATA_BACKEND_IMPL_H_