Store alloc history data in memory leak report protobuf

chrome/browser/metrics/leak_detector_controller.cc

 // 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.
 
 #include "chrome/browser/metrics/leak_detector_controller.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 101 matching lines @@
   // Initialize the new report with the protobuf template, which contains some
   // pre-filled data (parameter values).
   stored_reports_.push_back(leak_report_proto_template_);
   MemoryLeakReportProto* proto = &stored_reports_.back();
 
   // Fill in the remaining fields of the protobuf with data from |report|.
   proto->set_size_bytes(report.alloc_size_bytes);
   proto->mutable_call_stack()->Reserve(report.call_stack.size());
   for (uintptr_t call_stack_entry : report.call_stack)
     proto->mutable_call_stack()->Add(call_stack_entry);
+
+  for (const auto& entry : report.alloc_breakdown_history) {
+    auto* breakdown_proto = proto->add_alloc_breakdown_history();
+    for (const uint32_t count : entry.counts_by_size)
+      breakdown_proto->add_counts_by_size(count);
+    breakdown_proto->set_count_for_call_stack(entry.count_for_call_stack);
+  }
 }
 
 void LeakDetectorController::GetLeakReports(
     std::vector<MemoryLeakReportProto>* reports) {
   DCHECK(thread_checker_.CalledOnValidThread());
   *reports = std::move(stored_reports_);
 }
 
 }  // namespace metrics