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

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

Index: LayoutTests/http/tests/inspector-protocol/resources/InspectorTest.js
diff --git a/LayoutTests/http/tests/inspector-protocol/resources/InspectorTest.js b/LayoutTests/http/tests/inspector-protocol/resources/InspectorTest.js
index c650ea176ea455b00c7668c6bd4e819417de2f2c..b70df0d920f08aae656d208af403432b42e54f10 100644
--- a/LayoutTests/http/tests/inspector-protocol/resources/InspectorTest.js
+++ b/LayoutTests/http/tests/inspector-protocol/resources/InspectorTest.js
@@ -228,6 +228,20 @@ InspectorTest.importScript = function(scriptName)
     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);