DevTools: Add support for //# sourceURL (sourceMappingURL) comments and deprecate //@ ones

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

 var initialize_DebuggerTest = function() {
 
 InspectorTest.startDebuggerTest = function(callback, quiet)
 {
     if (quiet !== undefined)
         InspectorTest._quiet = quiet;
     WebInspector.showPanel("scripts");
 
     if (WebInspector.debuggerModel.debuggerEnabled())
         startTest();
@@ skipping 267 matching lines @@
     }
     return scripts;
 };
 
 InspectorTest.createScriptMock = function(url, startLine, startColumn, isContentScript, source)
 {
     var scriptId = ++InspectorTest._lastScriptId;
     var lineCount = source.lineEndings().length;
     var endLine = startLine + lineCount - 1;
     var endColumn = lineCount === 1 ? startColumn + source.length : source.length - source.lineEndings()[lineCount - 2];
-    var hasSourceURL = !!source.match(/\/\/@\ssourceURL=\s*(\S*?)\s*$/m);
+    var hasSourceURL = !!source.match(/\/\/#\ssourceURL=\s*(\S*?)\s*$/m) || !!source.match(/\/\/@\ssourceURL=\s*(\S*?)\s*$/m);
     var script = new WebInspector.Script(scriptId, url, startLine, startColumn, endLine, endColumn, isContentScript, null, hasSourceURL);
     script.requestContent = function(callback) { callback(source, false, "text/javascript"); };
     WebInspector.debuggerModel._registerScript(script);
     return script;
 }
 
 InspectorTest._lastScriptId = 0;
 
 InspectorTest.checkRawLocation = function(script, lineNumber, columnNumber, location)
 {
     InspectorTest.assertEquals(script.scriptId, location.scriptId, "Incorrect scriptId");
     InspectorTest.assertEquals(lineNumber, location.lineNumber, "Incorrect lineNumber");
     InspectorTest.assertEquals(columnNumber, location.columnNumber, "Incorrect columnNumber");
 };
 
 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 + "'");
 };
 
 };