[DevTools] Remove SDKModels' fromTarget methods

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

Index: third_party/WebKit/Source/devtools/front_end/sdk/LayerTreeBase.js
diff --git a/third_party/WebKit/Source/devtools/front_end/sdk/LayerTreeBase.js b/third_party/WebKit/Source/devtools/front_end/sdk/LayerTreeBase.js
index 6dc5b8e552344653f70cc6897eea255fd0b4bf59..09ae1781f9592144e332c638aad2e9543e4e96b4 100644
--- a/third_party/WebKit/Source/devtools/front_end/sdk/LayerTreeBase.js
+++ b/third_party/WebKit/Source/devtools/front_end/sdk/LayerTreeBase.js
@@ -146,7 +146,7 @@ SDK.LayerTreeBase = class {
    */
   constructor(target) {
     this._target = target;
-    this._domModel = target ? SDK.DOMModel.fromTarget(target) : null;
+    this._domModel = target ? target.model(SDK.DOMModel) : null;
     this._layersById = {};
     this._root = null;
     this._contentRoot = null;