DevTools: add console test helpers to new test runner & migrate a console test

third_party/WebKit/Source/devtools/front_end/main/module.json

Index: third_party/WebKit/Source/devtools/front_end/main/module.json
diff --git a/third_party/WebKit/Source/devtools/front_end/main/module.json b/third_party/WebKit/Source/devtools/front_end/main/module.json
index 538e46319b2555731062570ffc89c5f313ab5f2f..a6a3ea8ae0958ca9a5493bbd7e6c03cb4f08e4b7 100644
--- a/third_party/WebKit/Source/devtools/front_end/main/module.json
+++ b/third_party/WebKit/Source/devtools/front_end/main/module.json
@@ -209,12 +209,6 @@
             "location": "main-toolbar-left",
             "condition": "!nodeFrontend"
         },
-        {
-            "type": "@UI.ToolbarItem.Provider",
-            "className": "Main.Main.WarningErrorCounter",
-            "order": 1,
-            "location": "main-toolbar-right"
-        },
         {
             "type": "@UI.ToolbarItem.Provider",
             "separator": true,
@@ -436,7 +430,8 @@
         "persistence",
         "help",
         "console_model",
-        "network_log"
+        "network_log",
+        "counters"
     ],
     "scripts": [
         "RenderingOptions.js",
@@ -447,7 +442,6 @@
         "Main.js"
     ],
     "resources": [
-        "errorWarningCounter.css",
         "nodeIcon.css",
         "remoteDebuggingTerminatedScreen.css",
         "renderingOptions.css",