[Devtools] Fix offline checkbox state sharing across Network and Application>Service Workers panels

third_party/WebKit/Source/devtools/front_end/network_conditions/NetworkConditionsSelector.js

Index: third_party/WebKit/Source/devtools/front_end/network_conditions/NetworkConditionsSelector.js
diff --git a/third_party/WebKit/Source/devtools/front_end/network_conditions/NetworkConditionsSelector.js b/third_party/WebKit/Source/devtools/front_end/network_conditions/NetworkConditionsSelector.js
index 82f6a3375f260650dd315f1813cc4a7516de559a..25ab9f55d1741c714c8338e7548016a6db81f5fb 100644
--- a/third_party/WebKit/Source/devtools/front_end/network_conditions/NetworkConditionsSelector.js
+++ b/third_party/WebKit/Source/devtools/front_end/network_conditions/NetworkConditionsSelector.js
@@ -176,21 +176,19 @@ NetworkConditions.NetworkConditionsSelector = class {
         SDK.MultitargetNetworkManager.Events.ConditionsChanged, networkConditionsChanged);
     checkbox.setChecked(SDK.multitargetNetworkManager.networkConditions() === SDK.NetworkManager.OfflineConditions);
 
-    var lastNetworkConditions;
-
     function forceOffline() {
       if (checkbox.checked()) {
-        lastNetworkConditions = SDK.multitargetNetworkManager.networkConditions();
+        NetworkConditions.NetworkConditionsSelector._lastNetworkConditions =
+            SDK.multitargetNetworkManager.networkConditions();
         SDK.multitargetNetworkManager.setNetworkConditions(SDK.NetworkManager.OfflineConditions);
       } else {
-        SDK.multitargetNetworkManager.setNetworkConditions(lastNetworkConditions);
+        SDK.multitargetNetworkManager.setNetworkConditions(
+            NetworkConditions.NetworkConditionsSelector._lastNetworkConditions);
       }
     }
 
     function networkConditionsChanged() {
       var conditions = SDK.multitargetNetworkManager.networkConditions();
-      if (conditions !== SDK.NetworkManager.OfflineConditions)
-        lastNetworkConditions = conditions;
       checkbox.setChecked(conditions === SDK.NetworkManager.OfflineConditions);
     }
     return checkbox;