Reland of "Mojo interface/service for Leak Detector on remote process"

chrome/renderer/leak_detector/leak_detector_remote_client.h

Index: chrome/renderer/leak_detector/leak_detector_remote_client.h
diff --git a/chrome/renderer/leak_detector/leak_detector_remote_client.h b/chrome/renderer/leak_detector/leak_detector_remote_client.h
new file mode 100644
index 0000000000000000000000000000000000000000..73c8dd033ebfda6e70a878467a8d069a02d0120e
--- /dev/null
+++ b/chrome/renderer/leak_detector/leak_detector_remote_client.h
@@ -0,0 +1,32 @@
+// 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 CHROME_RENDERER_LEAK_DETECTOR_LEAK_DETECTOR_REMOTE_CLIENT_H_
+#define CHROME_RENDERER_LEAK_DETECTOR_LEAK_DETECTOR_REMOTE_CLIENT_H_
+
+#include "base/macros.h"
+#include "components/metrics/leak_detector/leak_detector.h"
+#include "components/metrics/leak_detector/leak_detector.mojom.h"
+
+class LeakDetectorRemoteClient : public metrics::LeakDetector::Observer {
+ public:
+  LeakDetectorRemoteClient();
+  ~LeakDetectorRemoteClient() override;
+
+  // metrics::LeakDetector::Observer:
+  void OnLeaksFound(
+      const std::vector<metrics::MemoryLeakReportProto>& reports) override;
+
+ private:
+  // Callback for remote function LeakDetectorRemote::GetParams().
+  void OnParamsReceived(
+      mojo::StructPtr<metrics::mojom::LeakDetectorParams> result);
+
+  // Handle to the remote Mojo interface.
+  metrics::mojom::LeakDetectorPtr remote_service_;
+
+  DISALLOW_COPY_AND_ASSIGN(LeakDetectorRemoteClient);
+};
+
+#endif  // CHROME_RENDERER_LEAK_DETECTOR_LEAK_DETECTOR_REMOTE_CLIENT_H_