Convert RapporRecorder to use mojo.

components/rappor/rappor_recorder_impl.h

+// Copyright 2016 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_RAPPOR_RAPPOR_RECORDER_IMPL_H_
+#define COMPONENTS_RAPPOR_RAPPOR_RECORDER_IMPL_H_
+
+#include "base/threading/thread_checker.h"
+#include "components/rappor/public/interfaces/rappor_recorder.mojom.h"
+
+class GURL;
+
+namespace rappor {
+
+class RapporService;
+
+// Records aggregate, privacy-preserving samples from the renderers.
+// See https://www.chromium.org/developers/design-documents/rappor
+class RapporRecorderImpl : public mojom::RapporRecorder {
+ public:
+  explicit RapporRecorderImpl(RapporService* rappor_service);
+  ~RapporRecorderImpl() override;
+
+  static void Create(RapporService* rappor_service,
+                     mojom::RapporRecorderRequest request);
+
+ private:
+  // rappor::mojom::RapporRecorder:
+  void RecordRappor(const std::string& metric,
+                    const std::string& sample) override;
+  void RecordRapporURL(const std::string& metric, const GURL& sample) override;
+
+  RapporService* rappor_service_;
+  base::ThreadChecker thread_checker_;
+
+  DISALLOW_COPY_AND_ASSIGN(RapporRecorderImpl);
+};
+
+}  // namespace rappor
+
+#endif  // COMPONENTS_RAPPOR_RAPPOR_RECORDER_IMPL_H_