DevTools: split text_utils out of common module

third_party/WebKit/LayoutTests/http/tests/inspector/live-edit-test.js

 var initialize_LiveEditTest = function() {
 
 InspectorTest.replaceInSource = function(sourceFrame, string, replacement)
 {
     sourceFrame._textEditor.setReadOnly(false);
     for (var i = 0; i < sourceFrame._textEditor.linesCount; ++i) {
         var line = sourceFrame._textEditor.line(i);
         var column = line.indexOf(string);
         if (column === -1)
             continue;
-        range = new Common.TextRange(i, column, i, column + string.length);
+        range = new TextUtils.TextRange(i, column, i, column + string.length);
         var newRange = sourceFrame._textEditor.editRange(range, replacement);
         break;
     }
 }
 
 InspectorTest.commitSource = function(sourceFrame)
 {
     sourceFrame.commitEditing();
 }
 
 InspectorTest.undoSourceEditing = function(sourceFrame)
 {
     sourceFrame._textEditor.undo();
 }
 
 };