Expose bits of the Web Notification database in the //content API.

content/browser/notifications/platform_notification_context_impl.h

 // Copyright 2015 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_BROWSER_NOTIFICATIONS_PLATFORM_NOTIFICATION_CONTEXT_H_
-#define CONTENT_BROWSER_NOTIFICATIONS_PLATFORM_NOTIFICATION_CONTEXT_H_
+#ifndef CONTENT_BROWSER_NOTIFICATIONS_PLATFORM_NOTIFICATION_CONTEXT_IMPL_H_
+#define CONTENT_BROWSER_NOTIFICATIONS_PLATFORM_NOTIFICATION_CONTEXT_IMPL_H_
 
 #include <stdint.h>
 
 #include "base/callback.h"
+#include "base/compiler_specific.h"
 #include "base/files/file_path.h"
 #include "base/memory/ref_counted.h"
 #include "content/common/content_export.h"
+#include "content/public/browser/platform_notification_context.h"
 
 class GURL;
 
 namespace base {
 class SequencedTaskRunner;
 }
 
 namespace content {
 
 class NotificationDatabase;
 struct NotificationDatabaseData;
 
-// Implementation of the Web Notification storage context.
-//
-// Represents the storage context for persistent Web Notifications, specific to
-// the storage partition owning the instance. The public methods defined in this
-// interface must only be called on the IO thread.
-class CONTENT_EXPORT PlatformNotificationContext
-    : public base::RefCountedThreadSafe<PlatformNotificationContext> {
+// Implementation of the Web Notification storage context. The public methods
+// defined in this interface must only be called on the IO thread.
+class CONTENT_EXPORT PlatformNotificationContextImpl
+    : public NON_EXPORTED_BASE(PlatformNotificationContext) {
  public:
   // Constructs a new platform notification context. If |path| is non-empty, the
   // database will be initialized in the "Platform Notifications" subdirectory
   // of |path|. Otherwise, the database will be initialized in memory.
-  explicit PlatformNotificationContext(const base::FilePath& path);
+  explicit PlatformNotificationContextImpl(const base::FilePath& path);
 
-  using ReadResultCallback =
-      base::Callback<void(bool /* success */,
-                          const NotificationDatabaseData&)>;
-
-  using WriteResultCallback =
-      base::Callback<void(bool /* success */,
-                          int64_t /* notification_id */)>;
-
-  using DeleteResultCallback = base::Callback<void(bool /* success */)>;
-
-  // Reads the data associated with |notification_id| belonging to |origin|
-  // from the database. |callback| will be invoked with the success status
-  // and a reference to the notification database data when completed.
+  // PlatformNotificationContext implementation.
   void ReadNotificationData(int64_t notification_id,
                             const GURL& origin,
-                            const ReadResultCallback& callback);
-
-  // Writes the data associated with a notification to a database. When this
-  // action completed, |callback| will be invoked with the success status and
-  // the persistent notification id when written successfully.
+                            const ReadResultCallback& callback) override;
   void WriteNotificationData(const GURL& origin,
                              const NotificationDatabaseData& database_data,
-                             const WriteResultCallback& callback);
-
-  // Deletes all data associated with |notification_id| belonging to |origin|
-  // from the database. |callback| will be invoked with the success status
-  // when the operation has completed.
+                             const WriteResultCallback& callback) override;
   void DeleteNotificationData(int64_t notification_id,
                               const GURL& origin,
-                              const DeleteResultCallback& callback);
+                              const DeleteResultCallback& callback) override;
 
  private:
-  friend class base::RefCountedThreadSafe<PlatformNotificationContext>;
   friend class PlatformNotificationContextTest;
 
-  virtual ~PlatformNotificationContext();
+  ~PlatformNotificationContextImpl() override;
 
   // Initializes the database if neccesary. Must be called on the IO thread.
   // |success_closure| will be invoked on a the |task_runner_| thread when
   // everything is available, or |failure_closure_| will be invoked on the
   // IO thread when initialization fails.
   void LazyInitialize(const base::Closure& success_closure,
                       const base::Closure& failure_closure);
 
   // Opens the database. Must be called on the |task_runner_| thread. When the
   // database has been opened, |success_closure| will be invoked on the task
@@ skipping 27 matching lines @@
 
   // Sets the task runner to use for testing purposes.
   void SetTaskRunnerForTesting(
       const scoped_refptr<base::SequencedTaskRunner>& task_runner);
 
   base::FilePath path_;
 
   scoped_refptr<base::SequencedTaskRunner> task_runner_;
   scoped_ptr<NotificationDatabase> database_;
 
-  DISALLOW_COPY_AND_ASSIGN(PlatformNotificationContext);
+  DISALLOW_COPY_AND_ASSIGN(PlatformNotificationContextImpl);
 };
 
 }  // namespace content
 
-#endif  // CONTENT_BROWSER_NOTIFICATIONS_PLATFORM_NOTIFICATION_CONTEXT_H_
+#endif  // CONTENT_BROWSER_NOTIFICATIONS_PLATFORM_NOTIFICATION_CONTEXT_IMPL_H_