Domain Reliability: Don't crash on shutdown with uploads pending

chrome/browser/net/chrome_network_delegate.h

Index: chrome/browser/net/chrome_network_delegate.h
diff --git a/chrome/browser/net/chrome_network_delegate.h b/chrome/browser/net/chrome_network_delegate.h
index bce63311264116e87fe81896cbc383a02db8dd6d..37ac5796023b10d08d4c1e7860db674d5cd052c2 100644
--- a/chrome/browser/net/chrome_network_delegate.h
+++ b/chrome/browser/net/chrome_network_delegate.h
@@ -17,6 +17,7 @@
 #include "base/values.h"
 #include "build/build_config.h"
 #include "components/data_use_measurement/content/data_use_measurement.h"
+#include "components/domain_reliability/monitor.h"
 #include "components/metrics/data_use_tracker.h"
 #include "components/prefs/pref_member.h"
 #include "net/base/network_delegate_impl.h"
@@ -116,8 +117,8 @@ class ChromeNetworkDelegate : public net::NetworkDelegateImpl {
   }
 
   void set_domain_reliability_monitor(
-      domain_reliability::DomainReliabilityMonitor* monitor) {
-    domain_reliability_monitor_ = monitor;
+      std::unique_ptr<domain_reliability::DomainReliabilityMonitor> monitor) {
+    domain_reliability_monitor_ = std::move(monitor);
   }
 
   void set_data_use_aggregator(
@@ -208,7 +209,8 @@ class ChromeNetworkDelegate : public net::NetworkDelegateImpl {
 
   // Weak, owned by our owner.
   const policy::URLBlacklistManager* url_blacklist_manager_;
-  domain_reliability::DomainReliabilityMonitor* domain_reliability_monitor_;
+  std::unique_ptr<domain_reliability::DomainReliabilityMonitor>
+      domain_reliability_monitor_;
 
   // When true, allow access to all file:// URLs.
   static bool g_allow_file_access_;