[DevTools] Better locations for snippets

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

 var initialize_ConsoleTest = function() {
 
 InspectorTest.preloadModule("source_frame");
 InspectorTest.preloadPanel("console");
 
 InspectorTest.selectMainExecutionContext = function()
 {
     var executionContexts = InspectorTest.mainTarget.runtimeModel.executionContexts();
     for (var context of executionContexts) {
         if (context.isDefault) {
@@ skipping 350 matching lines @@
             InspectorTest.addResult("FAILED: didn't find _parameters field in the message.");
         }
     }
 }
 
 InspectorTest.waitUntilMessageReceived = function(callback)
 {
     InspectorTest.addSniffer(InspectorTest.consoleModel, "addMessage", callback, false);
 }
 
+InspectorTest.waitUntilMessageReceivedPromise = function()
+{
+    var cb;
+    var p = new Promise((f) => cb = f);
+    InspectorTest.waitUntilMessageReceived(cb);
+    return p;
+}
+
 InspectorTest.waitUntilNthMessageReceived = function(count, callback)
 {
     function override()
     {
         if (--count === 0)
             InspectorTest.safeWrap(callback)();
         else
             InspectorTest.addSniffer(InspectorTest.consoleModel, "addMessage", override, false);
     }
     InspectorTest.addSniffer(InspectorTest.consoleModel, "addMessage", override, false);
 }
 
+InspectorTest.waitUntilNthMessageReceivedPromise = function(count)
+{
+    var cb;
+    var p = new Promise((f) => cb = f);
+    InspectorTest.waitUntilNthMessageReceived(count, cb);
+    return p;
+}
+
 InspectorTest.changeExecutionContext = function(namePrefix)
 {
     var selector = WebInspector.ConsoleView.instance()._executionContextModel._selectElement;
     var option = selector.firstChild;
     while (option) {
         if (option.textContent && option.textContent.startsWith(namePrefix))
             break;
         option = option.nextSibling;
     }
     if (!option) {
@@ skipping 14 matching lines @@
         if (consoleView._visibleViewMessages.length === expectedCount) {
             InspectorTest.addResult("Message count: " + expectedCount);
             callback();
         } else {
             InspectorTest.addSniffer(consoleView, "_messageAppendedForTests", checkAndReturn);
         }
     }
 }
 
 }