Make tab capture media stream requests verify that the request came from extension API

chrome/browser/extensions/api/tab_capture/tab_capture_apitest.cc

 // Copyright (c) 2012 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.
 
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/common/chrome_version_info.h"
 #include "chrome/common/extensions/feature_switch.h"
 #include "chrome/common/extensions/features/feature.h"
 #include "content/public/common/content_switches.h"
 
@@ skipping 17 matching lines @@
 };
 
 }  // namespace
 
 IN_PROC_BROWSER_TEST_F(TabCaptureApiTest, TabCapture) {
   extensions::FeatureSwitch::ScopedOverride tab_capture(
       extensions::FeatureSwitch::tab_capture(), true);
   ASSERT_TRUE(RunExtensionTest("tab_capture/experimental")) << message_;
 }
 
+IN_PROC_BROWSER_TEST_F(TabCaptureApiTest, TabCapturePermissionsTest) {
+  extensions::FeatureSwitch::ScopedOverride tab_capture(
+      extensions::FeatureSwitch::tab_capture(), true);
+  ASSERT_TRUE(RunExtensionTest("tab_capture/permissions")) << message_;
+}
+
 }  // namespace chrome