[DevTools] No longer store security origins in ResourceTreeModel

third_party/WebKit/Source/devtools/front_end/resources/AppManifestView.js

Index: third_party/WebKit/Source/devtools/front_end/resources/AppManifestView.js
diff --git a/third_party/WebKit/Source/devtools/front_end/resources/AppManifestView.js b/third_party/WebKit/Source/devtools/front_end/resources/AppManifestView.js
index a458ab19f198bd24d4a974c94461682a68729bf3..012b5a81962c5fa4079e8622cad879bc5a6a7c82 100644
--- a/third_party/WebKit/Source/devtools/front_end/resources/AppManifestView.js
+++ b/third_party/WebKit/Source/devtools/front_end/resources/AppManifestView.js
@@ -52,12 +52,14 @@ WebInspector.AppManifestView.prototype = {
      */
     targetAdded: function(target)
     {
-        if (this._target)
+        if (this._resourceTreeModel)
             return;
-        this._target = target;
-
-        this._updateManifest();
-        WebInspector.targetManager.addEventListener(WebInspector.TargetManager.Events.MainFrameNavigated, this._updateManifest, this);
+        var resourceTreeModel = WebInspector.ResourceTreeModel.fromTarget(target);
+        if (resourceTreeModel) {

[dgozman, 2016/07/22 03:27:02]

Let's observe DOM capability and assert here instead.

[eostroukhov-old, 2016/07/22 23:27:43]

Done.

+            this._resourceTreeModel = resourceTreeModel;
+            this._updateManifest();
+            resourceTreeModel.addEventListener(WebInspector.ResourceTreeModel.EventTypes.MainFrameNavigated, this._updateManifest, this);
+        }
     },
 
     /**
@@ -70,7 +72,8 @@ WebInspector.AppManifestView.prototype = {
 
     _updateManifest: function()
     {
-        this._target.resourceTreeModel.fetchAppManifest(this._renderManifest.bind(this));
+        if (this._resourceTreeModel)

[dgozman, 2016/07/22 03:27:02]

Judging by previous code, this method is never called without resourceTreeModel.

[eostroukhov-old, 2016/07/22 23:27:43]

Done.

+            this._resourceTreeModel.fetchAppManifest(this._renderManifest.bind(this));
     },
 
     /**