DevTools: [SSP] refactoring to remove styleRule.section property

LayoutTests/http/tests/inspector/elements-test.js

 function getInspectorHighlightJSON(nodeId, opt_frameId)
 {
     var doc = document;
     if (opt_frameId)
         doc = document.getElementById(opt_frameId).contentDocument;
     return window.internals.inspectorHighlightJSON(doc.getElementById(nodeId));
 }
 
 var initialize_ElementTest = function() {
 
@@ skipping 217 matching lines @@
         for (var i = 0; i < sections.length; ++i) {
             var section = sections[i];
             if (section.computedStyle && excludeComputed)
                 continue;
             if (section.rule && excludeMatched)
                 continue;
             if (section.element && section.element.classList.contains("user-rule") && !WebInspector.settings.showUserAgentStyles.get())
                 continue;
             if (section.element.previousSibling && section.element.previousSibling.className === "sidebar-separator")
                 InspectorTest.addResult("======== " + section.element.previousSibling.textContent + " ========");
-            InspectorTest.addResult((section.expanded ? "[expanded] " : "[collapsed] ") + (section.noAffect ? "[no-affect] " : ""));
+            InspectorTest.addResult((section.expanded ? "[expanded] " : "[collapsed] ") + (section.element.classList.contains("no-affect") ? "[no-affect] " : ""));
             var chainEntries = section.titleElement.querySelectorAll(".media-list .media");
             chainEntries = Array.prototype.slice.call(chainEntries);
             if (section.titleElement.children[1])
                 chainEntries.push(section.titleElement.children[1]);
 
             for (var j = 0; j < chainEntries.length; ++j) {
                 var chainEntry = chainEntries[j];
                 var entryLine = includeSelectorGroupMarks ? buildMarkedSelectors(chainEntry.children[1]) : chainEntry.children[1].textContent;
                 if (chainEntry.children[2])
                     entryLine += " " + chainEntry.children[2].textContent;
@@ skipping 539 matching lines @@
     function innerCallback(result)
     {
         InspectorTest.addResult(nodeId + ": " + result.description);
         callback();
     }
     opt_frameId = opt_frameId || "";
     InspectorTest.evaluateInPage("getInspectorHighlightJSON(\"" + nodeId + "\", \"" + opt_frameId + "\")", innerCallback);
 }
 
 };