test: drop now-empty remote runner (#35343)

* test: drop the now-empty remote runner from CI

* move fixtures to spec-main

* remove remote runner

* fix stuff

* remove global-paths hack

* move ts-smoke to spec/

* fix test after merge

* rename spec-main to spec

* no need to ignore spec/node_modules twice

* simplify spec-runner a little

* no need to hash pj/yl twice

* undo lint change to verify-mksnapshot.py

* excessive ..

* update electron_woa_testing.yml

* don't search for test-results-remote.xml

it is never produced now

spec/fixtures/extensions/chrome-api/background.js

@@ -0,0 +1,34 @@
+/* global chrome */
+
+chrome.runtime.onMessage.addListener((message, sender, sendResponse) => {
+  const { method, args = [] } = message;
+  const tabId = sender.tab.id;
+
+  switch (method) {
+    case 'sendMessage': {
+      const [message] = args;
+      chrome.tabs.sendMessage(tabId, { message, tabId }, undefined, sendResponse);
+      break;
+    }
+
+    case 'executeScript': {
+      const [code] = args;
+      chrome.tabs.executeScript(tabId, { code }, ([result]) => sendResponse(result));
+      break;
+    }
+
+    case 'connectTab': {
+      const [name] = args;
+      const port = chrome.tabs.connect(tabId, { name });
+      port.postMessage('howdy');
+      break;
+    }
+
+    case 'update': {
+      const [tabId, props] = args;
+      chrome.tabs.update(tabId, props, sendResponse);
+    }
+  }
+  // Respond asynchronously
+  return true;
+});