Show service worker navigation preload requests in DevTools Network tab

third_party/WebKit/Source/devtools/front_end/sdk/SubTargetsManager.js

 // 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.
 /**
  * @unrestricted
  */
 SDK.SubTargetsManager = class extends SDK.SDKModel {
   /**
    * @param {!SDK.Target} target
    */
@@ skipping 112 matching lines @@
    */
   targetInfo(target) {
     return target[SDK.SubTargetsManager._InfoSymbol] || null;
   }
 
   /**
    * @param {string} type
    * @return {number}
    */
   _capabilitiesForType(type) {
-    if (type === 'worker')
-      return SDK.Target.Capability.JS | SDK.Target.Capability.Log;
+    if (type === 'worker') {
+      var capabilities = SDK.Target.Capability.JS | SDK.Target.Capability.Log;
+      var parentTargetInfo = this.targetInfo(this.target());
+      var mainIsServiceWorker =
+          !this.target().parentTarget() && this.target().hasTargetCapability() && !this.target().hasJSCapability();
+      if ((parentTargetInfo && parentTargetInfo.type === 'service_worker') || mainIsServiceWorker)
+        capabilities |= SDK.Target.Capability.Network;
+      return capabilities;
+    }
     if (type === 'service_worker')
       return SDK.Target.Capability.Log | SDK.Target.Capability.Network | SDK.Target.Capability.Target;
     if (type === 'iframe') {
       return SDK.Target.Capability.Browser | SDK.Target.Capability.DOM | SDK.Target.Capability.JS |
           SDK.Target.Capability.Log | SDK.Target.Capability.Network | SDK.Target.Capability.Target;
     }
     if (type === 'node')
       return SDK.Target.Capability.JS;
     return 0;
   }
@@ skipping 11 matching lines @@
       targetName = parsedURL ? parsedURL.lastPathComponentWithFragment() : '#' + (++this._lastAnonymousTargetId);
     }
     var target = SDK.targetManager.createTarget(
         targetName, this._capabilitiesForType(targetInfo.type), this._createConnection.bind(this, targetInfo.id),
         this.target());
     target[SDK.SubTargetsManager._InfoSymbol] = targetInfo;
     this._attachedTargets.set(targetInfo.id, target);
 
     // Only pause new worker if debugging SW - we are going through the pause on start checkbox.
     var mainIsServiceWorker =
-        !this.target().parentTarget() && this.target().hasTargetCapability() && !this.target().hasBrowserCapability();
+        !this.target().parentTarget() && this.target().hasTargetCapability() && !this.target().hasJSCapability();
     if (mainIsServiceWorker && waitingForDebugger)
       target.debuggerAgent().pause();
     target.runtimeAgent().runIfWaitingForDebugger();
   }
 
   /**
    * @param {string} targetId
    * @param {!Protocol.InspectorBackend.Connection.Params} params
    * @return {!Protocol.InspectorBackend.Connection}
    */
@@ skipping 174 matching lines @@
     this.type = payload.type;
     this.canActivate = this.type === 'page' || this.type === 'iframe';
     if (this.type === 'node')
       this.title = Common.UIString('Node: %s', this.url);
     else if (this.type === 'page' || this.type === 'iframe')
       this.title = payload.title;
     else
       this.title = Common.UIString('Worker: %s', this.url);
   }
 };