Move all ProvisionFetcher classes out of android/ subdirectories.

media/base/android/provision_fetcher.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 MEDIA_BASE_ANDROID_PROVISION_FETCHER_H_
-#define MEDIA_BASE_ANDROID_PROVISION_FETCHER_H_
-
-#include <memory>
-#include <string>
-
-#include "base/callback.h"
-#include "media/base/media_export.h"
-
-namespace media {
-
-// The interface to retrieve provision information for MediaDrmBridge.
-class MEDIA_EXPORT ProvisionFetcher {
- public:
-  // After provision information is retrieved this callback will be called
-  // with the status flag (success/failure) and the provision response in
-  // case of success.
-  using ResponseCB =
-      base::Callback<void(bool success, const std::string& response)>;
-
-  virtual ~ProvisionFetcher() {}
-
-  // Requests the provision information with |default_url| and |request_data|
-  // and calls |response_cb| callback with the response. The input parameters
-  // |default_url| and |request_data| corresponds to Java class
-  // MediaDrm.ProvisionRequest.
-  // The implementation must call |response_cb| asynchronously on the same
-  // thread that this method is called.
-  virtual void Retrieve(const std::string& default_url,
-                        const std::string& request_data,
-                        const ResponseCB& response_cb) = 0;
-};
-
-using CreateFetcherCB = base::Callback<std::unique_ptr<ProvisionFetcher>()>;
-
-}  // namespace media
-
-#endif  // MEDIA_BASE_ANDROID_PROVISION_FETCHER_H_