[DevTools]: Require explicit connection

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

Index: third_party/WebKit/Source/devtools/front_end/sdk/TargetManager.js
diff --git a/third_party/WebKit/Source/devtools/front_end/sdk/TargetManager.js b/third_party/WebKit/Source/devtools/front_end/sdk/TargetManager.js
index f2afa4f500777defa67dfee04da99e0fe2030151..f15412ee0958aba3f3ba5afc308ab3c6f2af5c0b 100644
--- a/third_party/WebKit/Source/devtools/front_end/sdk/TargetManager.js
+++ b/third_party/WebKit/Source/devtools/front_end/sdk/TargetManager.js
@@ -185,9 +185,10 @@ WebInspector.TargetManager.prototype = {
      * @param {number} capabilitiesMask
      * @param {!InspectorBackendClass.Connection.Factory} connectionFactory
      * @param {?WebInspector.Target} parentTarget
+     * @param {boolean=} createOnly
      * @return {!WebInspector.Target}
      */
-    createTarget: function(name, capabilitiesMask, connectionFactory, parentTarget)
+    createTarget: function(name, capabilitiesMask, connectionFactory, parentTarget, createOnly)
     {
         var target = new WebInspector.Target(this, name, capabilitiesMask, connectionFactory, parentTarget);
 
@@ -229,7 +230,8 @@ WebInspector.TargetManager.prototype = {
         if (target.subTargetsManager && target.hasBrowserCapability())
             target.serviceWorkerManager = new WebInspector.ServiceWorkerManager(target, target.subTargetsManager);
 
-        this.addTarget(target);
+        if (!createOnly)
+            this.addTarget(target);
         return target;
     },