DevTools coverage: get script/stylesheet size directly, do not request content

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

 // Copyright 2016 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 {Common.ContentProvider}
  * @unrestricted
  */
 SDK.CSSStyleSheetHeader = class {
   /**
    * @param {!SDK.CSSModel} cssModel
    * @param {!Protocol.CSS.CSSStyleSheetHeader} payload
    */
   constructor(cssModel, payload) {
     this._cssModel = cssModel;
     this.id = payload.styleSheetId;
     this.frameId = payload.frameId;
     this.sourceURL = payload.sourceURL;
     this.hasSourceURL = !!payload.hasSourceURL;
     this.origin = payload.origin;
     this.title = payload.title;
     this.disabled = payload.disabled;
     this.isInline = payload.isInline;
     this.startLine = payload.startLine;
     this.startColumn = payload.startColumn;
+    this.contentLength = payload.length;
     if (payload.ownerNode)
       this.ownerNode = new SDK.DeferredDOMNode(cssModel.target(), payload.ownerNode);
     this.setSourceMapURL(payload.sourceMapURL);
   }
 
   /**
    * @return {!Common.ContentProvider}
    */
   originalContentProvider() {
     if (!this._originalContentProvider) {
@@ skipping 113 matching lines @@
     this.requestContent().then(performSearch);
   }
 
   /**
    * @return {boolean}
    */
   isViaInspector() {
     return this.origin === 'inspector';
   }
 };