DevTools: make StylesSourceMapping in charge of creating and removing UISourceCodes

third_party/WebKit/Source/devtools/front_end/bindings/CSSWorkspaceBinding.js

 // Copyright 2014 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.
 /**
  * @implements {SDK.TargetManager.Observer}
  * @unrestricted
  */
 Bindings.CSSWorkspaceBinding = class {
   /**
    * @param {!SDK.TargetManager} targetManager
@@ skipping 129 matching lines @@
 /**
  * @unrestricted
  */
 Bindings.CSSWorkspaceBinding.TargetInfo = class {
   /**
    * @param {!SDK.CSSModel} cssModel
    * @param {!Workspace.Workspace} workspace
    */
   constructor(cssModel, workspace) {
     this._cssModel = cssModel;
-    this._stylesSourceMapping = new Bindings.StylesSourceMapping(cssModel, workspace);
-    this._sassSourceMapping =
-        new Bindings.SASSSourceMapping(cssModel, workspace, Bindings.NetworkProject.forTarget(cssModel.target()));
+    var networkProject = Bindings.NetworkProject.forTarget(cssModel.target());
+    this._stylesSourceMapping = new Bindings.StylesSourceMapping(cssModel, networkProject);
+    this._sassSourceMapping = new Bindings.SASSSourceMapping(cssModel, workspace, networkProject);
 
     /** @type {!Multimap<!SDK.CSSStyleSheetHeader, !Bindings.LiveLocation>} */
     this._locations = new Multimap();
   }
 
   /**
    * @param {!Bindings.CSSWorkspaceBinding.LiveLocation} location
    */
   _addLocation(location) {
     var header = location._header;
@@ skipping 131 matching lines @@
    */
   isBlackboxed() {
     return false;
   }
 };
 
 /**
  * @type {!Bindings.CSSWorkspaceBinding}
  */
 Bindings.cssWorkspaceBinding;