DevTools: [CSS] Add CSS.editRangeInStyleSheetText() to the protocol

LayoutTests/http/tests/inspector-protocol/resources/InspectorTest.js

 /*
  * Copyright (C) 2012 Samsung Electronics. All rights reserved.
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 210 matching lines @@
  * @param {string} scriptName
  */
 InspectorTest.importScript = function(scriptName)
 {
     var xhr = new XMLHttpRequest();
     xhr.open("GET", scriptName, false);
     xhr.send(null);
     window.eval(xhr.responseText + "\n//@ sourceURL=" + scriptName);
 }
 
+InspectorTest.sendCommandOrDie = function(command, properties, callback) {

[apavlov, 2014/02/20 09:58:14]

The name does not clearly describe the functionality. I believe something like
sendCommandAndBailOnError() could be more comprehensible.

[lushnikov, 2014/02/20 14:17:04]

Done.

+    InspectorTest.sendCommand(command, properties || {}, commandCallback);
+    function commandCallback(msg)
+    {
+        if (msg.error) {
+            InspectorTest.log(msg.error.message);

[apavlov, 2014/02/20 09:58:14]

I'd vote for ("ERROR: " + msg.error.message), since the message may
coincidentally turn out to be the same as the last message logged by a test.

[lushnikov, 2014/02/20 14:17:04]

Done.

+            InspectorTest.completeTest();
+            return;
+        }
+        if (callback)
+            callback(msg.result);
+    }
+}
+
 window.addEventListener("message", function(event) {
     try {
         eval(event.data);
     } catch (e) {
         alert(e.stack);
         InspectorTest.completeTest();
         throw e;
     }
 });