[Devtools] Template fromTarget() function calls to model

third_party/WebKit/Source/devtools/front_end/layers/LayerTreeModel.js

Index: third_party/WebKit/Source/devtools/front_end/layers/LayerTreeModel.js
diff --git a/third_party/WebKit/Source/devtools/front_end/layers/LayerTreeModel.js b/third_party/WebKit/Source/devtools/front_end/layers/LayerTreeModel.js
index 33b83c68cc601821767a7d556fca162995c7a939..1729feb4b926032f61225527055ab4e02179b5a7 100644
--- a/third_party/WebKit/Source/devtools/front_end/layers/LayerTreeModel.js
+++ b/third_party/WebKit/Source/devtools/front_end/layers/LayerTreeModel.js
@@ -48,7 +48,7 @@ Layers.LayerTreeModel = class extends SDK.SDKModel {
     if (!target.hasDOMCapability())
       return null;
 
-    var model = /** @type {?Layers.LayerTreeModel} */ (target.model(Layers.LayerTreeModel));
+    var model = target.model(Layers.LayerTreeModel);
     if (!model)
       model = new Layers.LayerTreeModel(target);
     return model;