DevTools: do not show compiled script while source maps are being loaded.

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

 var initialize_DebuggerTest = function() {
 
 InspectorTest.preloadPanel("sources");
 
 InspectorTest.startDebuggerTest = function(callback, quiet)
 {
     console.assert(WebInspector.debuggerModel.debuggerEnabled(), "Debugger has to be enabled");
     if (quiet !== undefined)
         InspectorTest._quiet = quiet;
     WebInspector.SourcesPanel.show();
@@ skipping 293 matching lines @@
 InspectorTest.showScriptSource = function(scriptName, callback)
 {
     InspectorTest.waitForScriptSource(scriptName, function(uiSourceCode) { InspectorTest.showUISourceCode(uiSourceCode, callback); });
 };
 
 InspectorTest.waitForScriptSource = function(scriptName, callback)
 {
     var panel = WebInspector.panels.sources;
     var uiSourceCodes = panel._workspace.uiSourceCodes();
     for (var i = 0; i < uiSourceCodes.length; ++i) {
+        if (uiSourceCodes[i].project().type() === WebInspector.projectTypes.Service)
+            continue;
         if (uiSourceCodes[i].name() === scriptName) {
             callback(uiSourceCodes[i]);
             return;
         }
     }
 
     InspectorTest.addSniffer(WebInspector.SourcesView.prototype, "_addUISourceCode", InspectorTest.waitForScriptSource.bind(InspectorTest, scriptName, callback));
 };
 
 InspectorTest.dumpNavigatorView = function(navigatorView, id, prefix)
@@ skipping 136 matching lines @@
     return self.runtime.instancesPromise(WebInspector.SourcesView.EditorAction).then(function(editorActions) {
         for (var i = 0; i < editorActions.length; ++i) {
             if (editorActions[i] instanceof WebInspector.ScriptFormatterEditorAction)
                 return editorActions[i];
         }
         return null;
     });
 };
 
 };