[DevTools] Scope common protocol infrastructure under Protocol namespace in a separate module.

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

 if (window.GCController)
     GCController.collectAll();
 var initialize_InspectorTest = function() {
 
 var results = [];
 
 function consoleOutputHook(messageType)
 {
     InspectorTest.addResult(messageType + ": " + Array.prototype.slice.call(arguments, 1));
 }
 
 window._originalConsoleLog = console.log.bind(console);
 
 console.log = consoleOutputHook.bind(InspectorTest, "log");
 console.error = consoleOutputHook.bind(InspectorTest, "error");
 console.info = consoleOutputHook.bind(InspectorTest, "info");
 console.assert = function(condition, object)
 {
     if (condition)
         return;
     var message = "Assertion failed: " + (typeof object !== "undefined" ? object : "");
     InspectorTest.addResult(new Error(message).stack);
 }
 
 InspectorTest.startDumpingProtocolMessages = function()
 {
-    InspectorBackendClass.Connection.prototype._dumpProtocolMessage = testRunner.logToStderr.bind(testRunner);
-    InspectorBackendClass.Options.dumpInspectorProtocolMessages = 1;
+    Protocol.Target.prototype._dumpProtocolMessage = testRunner.logToStderr.bind(testRunner);
+    Protocol.Options.dumpInspectorProtocolMessages = 1;
 }
 
 InspectorTest.completeTest = function()
 {
     InspectorTest.RuntimeAgent.evaluate("completeTest(\"" + escape(JSON.stringify(results)) + "\")", "test");
 }
 
 InspectorTest.flushResults = function()
 {
     InspectorTest.RuntimeAgent.evaluate("flushResults(\"" + escape(JSON.stringify(results)) + "\")", "test");
@@ skipping 1125 matching lines @@
     _output("[page] " + text);
 }
 
 function _output(result)
 {
     if (!outputElement)
         createOutputElement();
     outputElement.appendChild(document.createTextNode(result));
     outputElement.appendChild(document.createElement("br"));
 }