DevTools: suppress protocol errors for tests unless debugTest

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

 if (window.GCController)
     GCController.collectAll();
+
 var initialize_InspectorTest = function() {
-
+Protocol.InspectorBackend.Options.suppressRequestErrors = true;
 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");
@@ skipping 1137 matching lines @@
 
     var initializationFunctions = [ String(initialize_InspectorTest) ];
     for (var name in window) {
         if (name.indexOf("initialize_") === 0 && typeof window[name] === "function" && name !== "initialize_InspectorTest")
             initializationFunctions.push(window[name].toString());
     }
     var toEvaluate = "(" + initializeFrontend + ")(" + "[" + initializationFunctions + "]" + ");";
     testRunner.evaluateInWebInspector(initializeCallId, toEvaluate);
 
     if (window.debugTest)
-        test = "function() { window.test = " + test.toString() + "; InspectorTest.addResult = window._originalConsoleLog; InspectorTest.completeTest = function() {}; }";
+        test = "function() { Protocol.InspectorBackend.Options.suppressRequestErrors = false; window.test = " + test.toString() + "; InspectorTest.addResult = window._originalConsoleLog; InspectorTest.completeTest = function() {}; }";
     toEvaluate = "(" + runTestInFrontend + ")(" + test + ");";
     testRunner.evaluateInWebInspector(runTestCallId, toEvaluate);
 
     if (enableWatchDogWhileDebugging) {
         function watchDog()
         {
             console.log("Internal watchdog triggered at 20 seconds. Test timed out.");
             closeInspectorAndNotifyDone();
         }
         window._watchDogTimer = setTimeout(watchDog, 20000);
@@ skipping 52 matching lines @@
     _output("[page] " + text);
 }
 
 function _output(result)
 {
     if (!outputElement)
         createOutputElement();
     outputElement.appendChild(document.createTextNode(result));
     outputElement.appendChild(document.createElement("br"));
 }