Store alloc history data in memory leak report protobuf

chrome/browser/metrics/leak_detector_controller.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 CHROME_BROWSER_METRICS_LEAK_DETECTOR_CONTROLLER_H_
 #define CHROME_BROWSER_METRICS_LEAK_DETECTOR_CONTROLLER_H_
 
 #include <vector>
 
 #include "base/macros.h"
 #include "base/threading/thread_checker.h"
 #include "components/metrics/leak_detector/leak_detector.h"
 #include "components/metrics/proto/memory_leak_report.pb.h"
 
 namespace metrics {
 
 // This class initializes the LeakDetector on the browser process and registers
 // itself to be notified of leak reports.
 class LeakDetectorController : public LeakDetector::Observer {
  public:
   LeakDetectorController();
   ~LeakDetectorController() override;
 
   // Retrieves all reports in |stored_reports_|, moving them to |*reports|.
   // |stored_reports_| is empty afterwards.
   void GetLeakReports(std::vector<MemoryLeakReportProto>* reports);
 
  protected:
   // LeakDetector::Observer:
-  void OnLeakFound(const LeakDetector::LeakReport& report) override;
+  void OnLeaksFound(const std::vector<MemoryLeakReportProto>& reports) override;
 
  private:
   // All leak reports received through OnLeakFound() are stored in protobuf
   // format.
   std::vector<MemoryLeakReportProto> stored_reports_;
 
   // All incoming leak reports should be converted to a MemoryLeakReportProto
   // starting with this template, which has some fields already filled in, e.g.
   // leak detection parameters. Storing the LeakDetector parameters in the
   // protobuf template avoids having to store these params as individual member
   // variables.
   const MemoryLeakReportProto leak_report_proto_template_;
 
   // For thread safety.
   base::ThreadChecker thread_checker_;
 
   DISALLOW_COPY_AND_ASSIGN(LeakDetectorController);
 };
 
 }  // namespace metrics
 
 #endif  // CHROME_BROWSER_METRICS_LEAK_DETECTOR_CONTROLLER_H_