[inspector] Refactor protocol-test.js

test/inspector/debugger/script-parsed-hash.js

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+let {session, contextGroup, Protocol} = InspectorTest.start('Tests scripts hasing');
+
 var hashes = new Set(["1C6D2E82E4E4F1BA4CB5762843D429DC872EBA18",
                       "EBF1ECD351E7A3294CB5762843D429DC872EBA18",
                       "86A31E7131896CF01BA837945C2894385F369F24"]);
 Protocol.Debugger.enable();
 Protocol.Debugger.onScriptParsed(function(messageObject)
 {
   if (hashes.has(messageObject.params.hash))
     InspectorTest.log(`Hash received: ${messageObject.params.hash}`);
   else
     InspectorTest.log(`[FAIL]: unknown hash ${messageObject.params.hash}`);
 });
 
 function longScript() {
   var longScript = "var b = 1;";
   for (var i = 0; i < 2024; ++i)
     longScript += "++b;";
 }
 
 Protocol.Runtime.enable();
 Protocol.Runtime.compileScript({ expression: "1", sourceURL: "foo1.js", persistScript: true });
 Protocol.Runtime.compileScript({ expression: "239", sourceURL: "foo2.js", persistScript: true });
 Protocol.Runtime.compileScript({ expression: "(" + longScript + ")()", sourceURL: "foo3.js", persistScript: true }).then(step2);
 
 function step2()
 {
   InspectorTest.completeTest();
 }