Fix web_accesible_resources enforcement for Site Isolation.

extensions/test/data/web_view/apitest/main.js

Index: extensions/test/data/web_view/apitest/main.js
diff --git a/extensions/test/data/web_view/apitest/main.js b/extensions/test/data/web_view/apitest/main.js
index 3d6e50fbe710b52d548f923cdf6b50727a8f2105..33dcb29d365505d0941981d9813f0f60fe497fd6 100644
--- a/extensions/test/data/web_view/apitest/main.js
+++ b/extensions/test/data/web_view/apitest/main.js
@@ -947,7 +947,7 @@ function testLoadAbortChromeExtensionURLWrongPartition() {
   var localResource = chrome.runtime.getURL('guest.html');
   var webview = document.createElement('webview');
   webview.addEventListener('loadabort', function(e) {
-    embedder.test.assertEq('ERR_ADDRESS_UNREACHABLE', e.reason);
+    embedder.test.assertEq('ERR_BLOCKED_BY_CLIENT', e.reason);
     embedder.test.succeed();
   });
   webview.addEventListener('loadstop', function(e) {