media: Add ProvisionFetcher mojo interface and implementation.

media/mojo/services/mojo_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_MOJO_SERVICES_MOJO_PROVISION_FETCHER_H_
+#define MEDIA_MOJO_SERVICES_MOJO_PROVISION_FETCHER_H_
+
+#include "base/macros.h"
+#include "base/memory/weak_ptr.h"
+#include "media/base/android/provision_fetcher.h"
+#include "media/mojo/interfaces/provision_fetcher.mojom.h"
+
+namespace media {
+
+// A ProvisionFetcher that proxies to a interfaces::ProvisionFetcherPtr.
+class MojoProvisionFetcher : public ProvisionFetcher {
+ public:
+  explicit MojoProvisionFetcher(
+      interfaces::ProvisionFetcherPtr provision_fetcher_ptr);
+  ~MojoProvisionFetcher() final;
+
+  // ProvisionFetcher implementation:
+  void Retrieve(const std::string& default_url,
+                const std::string& request_data,
+                const ResponseCB& response_cb) final;
+
+ private:
+  // Callback for interfaces::ProvisionFetcherPtr::Retrieve().
+  void OnResponse(const ResponseCB& response_cb,
+                  bool success,
+                  const std::string& response);
+
+  interfaces::ProvisionFetcherPtr provision_fetcher_ptr_;
+
+  base::WeakPtrFactory<MojoProvisionFetcher> weak_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(MojoProvisionFetcher);
+};
+
+}  // namespace media
+
+#endif  // MEDIA_MOJO_SERVICES_MOJO_PROVISION_FETCHER_H_