Store alloc history data in memory leak report protobuf

chrome/browser/metrics/leak_detector_controller.cc

Index: chrome/browser/metrics/leak_detector_controller.cc
diff --git a/chrome/browser/metrics/leak_detector_controller.cc b/chrome/browser/metrics/leak_detector_controller.cc
index 06762ea035777b276d120c7f8b9b130795750397..19548ce15507a2b8a246876ec9a885b36d4e1c6c 100644
--- a/chrome/browser/metrics/leak_detector_controller.cc
+++ b/chrome/browser/metrics/leak_detector_controller.cc
@@ -119,6 +119,13 @@ void LeakDetectorController::OnLeakFound(
   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(