[e2e] Adds error reporting to runner

Change-Id: I82ae11c0d927dc7e2cdea60e3fba97cd137005b1
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2038706
Commit-Queue: Paul Lewis <[email protected]>
Reviewed-by: Tim van der Lippe <[email protected]>

Author: paullewis

test/shared/runner.ts

@@ -122,6 +122,16 @@ interface DevToolsTarget {
     const frontendUrl = `http://localhost:8090/front_end/devtools_app.html?ws=localhost:${envPort}/devtools/page/${id}`;
     await frontend.goto(frontendUrl, {waitUntil: ['networkidle2', 'domcontentloaded']});
 
+    frontend.on('error', (err) => {
+      console.log('Error in Frontend');
+      console.log(err);
+    });
+
+    frontend.on('pageerror', (err) => {
+      console.log('Page Error in Frontend');
+      console.log(err);
+    });
+
     const resetPages =
         async (...enabledExperiments: string[]) => {
       // Reload the target page.