DevTools: add a test for chrome.devtools.inspectedWindow.eval using correct execution context

See also: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2602710

Bug: v8:11268, chromium:1101897
Change-Id: If57b53a910afe8945453f35689b63168c076db7c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2602709Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Andrey Kosyakov <caseq@chromium.org>
Cr-Commit-Position: refs/heads/master@{#839375}

third_party/blink/web_tests/http/tests/devtools/extensions/extensions-eval-execution-context-expected.txt

+Tests that webInspector.inspectedWindow.eval() only evaluates in the correct execution context
+
+Started extension.
+Running tests...
+RUNNING TEST: extension_testEvaluateInFixedExecutionContext
+error: Request Runtime.evaluate failed. {"code":-32602,"message":"uniqueContextId not found"}
+error: uniqueContextId not found
+error: Extension server error: Inspector protocol error: uniqueContextId not found
+Got error, as expected: {"code":"E_PROTOCOLERROR","description":"Inspector protocol error: %s","details":["uniqueContextId not found"],"isError":true}
+All tests done.
+

third_party/blink/web_tests/http/tests/devtools/extensions/extensions-eval-execution-context.js

+// Copyright 2020 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+(async function() {
+  TestRunner.addResult(
+      `Tests that webInspector.inspectedWindow.eval() only evaluates in the correct execution context\n`);
+  await TestRunner.loadModule('extensions_test_runner');
+  // First navigate to a new page to force a nice, clean renderer with predictable context ids.
+  await TestRunner.navigatePromise('http://devtools.a.test:8000/devtools/resources/empty.html');
+
+  let pendingInterceptionPromiseCallback;
+  TestRunner.startNavigation = async function(callback) {
+    SDK.multitargetNetworkManager.setInterceptionHandlerForPatterns([{
+      urlPattern: '*'}], interceptionHandler);
+
+    TestRunner.navigatePromise('http://devtools.b.test:8000/devtools/resources/empty.html');
+    function interceptionHandler(request) {
+      callback();
+      return new Promise(resolve => pendingInterceptionPromiseCallback = resolve);
+    }
+  }
+
+  TestRunner.completeNavigation = function() {
+    pendingInterceptionPromiseCallback();
+  }
+
+  await ExtensionsTestRunner.runExtensionTests([
+    async function extension_testEvaluateInFixedExecutionContext(nextTest) {
+      await evaluateOnFrontendPromise('TestRunner.startNavigation(reply)');
+      webInspector.inspectedWindow.eval('location.href', onEvaluate);
+      evaluateOnFrontendPromise('TestRunner.completeNavigation()');
+
+      function onEvaluate(result, error) {
+        if (result) {
+          output(`FAIL: expected error, got result: ${JSON.stringify(result)}`);
+        } else {
+          output(`Got error, as expected: ${JSON.stringify(error)}`);;
+        }
+        nextTest();
+      }
+    }
+  ]);
+})();

third_party/blink/web_tests/http/tests/devtools/resources/extension-main.js

@@ -50,6 +50,11 @@ function evaluateOnFrontend(expression, callback)
     window._extensionServerForTests.sendRequest({ command: "evaluateForTestInFrontEnd", expression: expression }, callback);
 }
 
+function evaluateOnFrontendPromise(expression, callback)
+{
+    return new Promise(resolve => evaluateOnFrontend(expression, resolve));
+}
+
 function invokePageFunctionAsync(functionName, callback)
 {
     evaluateOnFrontend("TestRunner.callFunctionInPageAsync('" + functionName + "').then(() => reply())", callback);