DevTools: use target-based model accessors only.

LayoutTests/inspector/sources/debugger/debugger-scripts.html

Index: LayoutTests/inspector/sources/debugger/debugger-scripts.html
diff --git a/LayoutTests/inspector/sources/debugger/debugger-scripts.html b/LayoutTests/inspector/sources/debugger/debugger-scripts.html
index 28303efbed95a9d0117acbf1b2f89f5687b7ed22..c9ae8ebfc536dbf91a25c5e43fbecbcce6c8fec4 100644
--- a/LayoutTests/inspector/sources/debugger/debugger-scripts.html
+++ b/LayoutTests/inspector/sources/debugger/debugger-scripts.html
@@ -12,13 +12,13 @@ function test()
     function step1()
     {
         InspectorTest.queryScripts(function(script) { step2({ data: script }) });
-        WebInspector.debuggerModel.addEventListener(WebInspector.DebuggerModel.Events.ParsedScriptSource, step2);
+        InspectorTest.debuggerModel.addEventListener(WebInspector.DebuggerModel.Events.ParsedScriptSource, step2);
     }
 
     function step2(event)
     {
         var script = event.data;
-        if (script.sourceURL !== WebInspector.resourceTreeModel.inspectedPageURL())
+        if (script.sourceURL !== InspectorTest.resourceTreeModel.inspectedPageURL())
             return;
         scripts.push(script);
         if (scripts.length === 6)