DevTools: Extract SourcesEditor from SourcesPanel.

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

 var initialize_DebuggerTest = function() {
 
 InspectorTest.startDebuggerTest = function(callback, quiet)
 {
     if (quiet !== undefined)
         InspectorTest._quiet = quiet;
     WebInspector.inspectorView.showPanel("sources");
 
     if (WebInspector.debuggerModel.debuggerEnabled())
         startTest();
@@ skipping 238 matching lines @@
 {
     var panel = WebInspector.inspectorView.showPanel("sources");
     var uiSourceCodes = panel._workspace.uiSourceCodes();
     for (var i = 0; i < uiSourceCodes.length; ++i) {
         if (uiSourceCodes[i].name() === scriptName) {
             callback(uiSourceCodes[i]);
             return;
         }
     }
 
-    InspectorTest.addSniffer(WebInspector.SourcesPanel.prototype, "_addUISourceCode", InspectorTest.waitForScriptSource.bind(InspectorTest, scriptName, callback));
+    InspectorTest.addSniffer(WebInspector.SourcesEditor.prototype, "_addUISourceCode", InspectorTest.waitForScriptSource.bind(InspectorTest, scriptName, callback));
 };
 
 InspectorTest.dumpNavigatorView = function(navigatorView, id, prefix)
 {
     InspectorTest.addResult(prefix + "Dumping ScriptsNavigator " + id + " tab:");
     dumpNavigatorTreeOutline(prefix, navigatorView._scriptsTree);
 
     function dumpNavigatorTreeElement(prefix, treeElement)
     {
         InspectorTest.addResult(prefix + treeElement.titleText);
@@ skipping 116 matching lines @@
 InspectorTest.checkUILocation = function(uiSourceCode, lineNumber, columnNumber, location)
 {
     InspectorTest.assertEquals(uiSourceCode, location.uiSourceCode, "Incorrect uiSourceCode, expected '" + (uiSourceCode ? uiSourceCode.originURL() : null) + "'," +
                                                                     " but got '" + (location.uiSourceCode ? location.uiSourceCode.originURL() : null) + "'");
     InspectorTest.assertEquals(lineNumber, location.lineNumber, "Incorrect lineNumber, expected '" + lineNumber + "', but got '" + location.lineNumber + "'");
     InspectorTest.assertEquals(columnNumber, location.columnNumber, "Incorrect columnNumber, expected '" + columnNumber + "', but got '" + location.columnNumber + "'");
 };
 
 InspectorTest.scriptFormatter = function()
 {
-    var editorActions = WebInspector.moduleManager.instances(WebInspector.SourcesPanel.EditorAction);
+    var editorActions = WebInspector.moduleManager.instances(WebInspector.SourcesEditor.EditorAction);
     for (var i = 0; i < editorActions.length; ++i) {
         if (editorActions[i] instanceof WebInspector.ScriptFormatterEditorAction)
             return editorActions[i];
     }
 };
 
 };