DevTools: use target-based model accessors only.

LayoutTests/inspector/elements/set-outer-html-test.js

 var initialize_SetOuterHTMLTest = function() {
 
 InspectorTest.events = [];
 InspectorTest.containerId;
 
 InspectorTest.setUpTestSuite = function(next)
 {
     InspectorTest.expandElementsTree(step1);
 
     function step1()
     {
         InspectorTest.selectNodeWithId("container", step2);
     }
 
     function step2(node)
     {
         InspectorTest.containerId = node.id;
         InspectorTest.DOMAgent.getOuterHTML(InspectorTest.containerId, step3);
     }
 
     function step3(error, text)
     {
         InspectorTest.containerText = text;
 
         for (var key in WebInspector.DOMModel.Events) {
             var eventName = WebInspector.DOMModel.Events[key];
-            WebInspector.domModel.addEventListener(eventName, InspectorTest.recordEvent.bind(InspectorTest, eventName));
+            InspectorTest.domModel.addEventListener(eventName, InspectorTest.recordEvent.bind(InspectorTest, eventName));
         }
 
         next();
     }
 }
 
 InspectorTest.recordEvent = function(eventName, event)
 {
     if (!event.data)
         return;
@@ skipping 29 matching lines @@
     }
 }
 
 InspectorTest.setOuterHTMLUseUndo = function(newText, next)
 {
     InspectorTest.innerSetOuterHTML(newText, false, bringBack);
 
     function bringBack()
     {
         InspectorTest.addResult("\nBringing things back\n");
-        WebInspector.domModel.undo(InspectorTest._dumpOuterHTML.bind(InspectorTest, true, next));
+        InspectorTest.domModel.undo(InspectorTest._dumpOuterHTML.bind(InspectorTest, true, next));
     }
 }
 
 InspectorTest.innerSetOuterHTML = function(newText, last, next)
 {
     InspectorTest.DOMAgent.setOuterHTML(InspectorTest.containerId, newText, InspectorTest._dumpOuterHTML.bind(InspectorTest, last, next));
 }
 
 InspectorTest._dumpOuterHTML = function(last, next)
 {
@@ skipping 14 matching lines @@
         InspectorTest.addResult("==========8<==========");
         InspectorTest.addResult(text);
         InspectorTest.addResult("==========>8==========");
         if (last)
             InspectorTest.addResult("\n\n\n");
         next();
     }
 }
 
 };