Create a LegacyExtensionBrowserTest class that lets us test extensions with

chrome/browser/extensions/extension_resource_request_policy_apitest.cc

 // Copyright (c) 2011 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 "base/logging.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/browser/ui/browser.h"
+#include "chrome/common/chrome_switches.h"
 #include "chrome/test/base/ui_test_utils.h"
 #include "content/browser/tab_contents/tab_contents.h"
 #include "googleurl/src/gurl.h"
 #include "net/base/mock_host_resolver.h"
 
 class ExtensionResourceRequestPolicyTest : public ExtensionApiTest {
+ protected:
+  void SetUpCommandLine(CommandLine* command_line) OVERRIDE {
+    ExtensionApiTest::SetUpCommandLine(command_line);
+    command_line->AppendSwitch(switches::kAllowLegacyExtensionManifests);
+  }
 };
 
 // Note, this mostly tests the logic of chrome/renderer/extensions/
 // extension_resource_request_policy.*, but we have it as a browser test so that
 // can make sure it works end-to-end.
 IN_PROC_BROWSER_TEST_F(ExtensionResourceRequestPolicyTest, OriginPrivileges) {
   host_resolver()->AddRule("*", "127.0.0.1");
   ASSERT_TRUE(test_server()->Start());
   ASSERT_TRUE(LoadExtension(test_data_dir_
       .AppendASCII("extension_resource_request_policy")
@@ skipping 85 matching lines @@
 #define MAYBE_Video FLAKY_Video
 #else
 #define MAYBE_Video Video
 #endif
 
 IN_PROC_BROWSER_TEST_F(ExtensionResourceRequestPolicyTest, MAYBE_Video) {
   EXPECT_TRUE(RunExtensionSubtest(
       "extension_resource_request_policy/extension2",
       "video.html"));
 }