Extension-created windows should share the creator's BrowingInstance.

chrome/browser/extensions/extension_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 <stddef.h>
 #include <utility>
 
 #include "base/base_switches.h"
@@ skipping 157 matching lines @@
 void ExtensionApiTest::TearDownInProcessBrowserTestFixture() {
   extensions::TestGetConfigFunction::set_test_config_state(NULL);
   test_config_.reset(NULL);
 }
 
 bool ExtensionApiTest::RunExtensionTest(const std::string& extension_name) {
   return RunExtensionTestImpl(
       extension_name, std::string(), NULL, kFlagEnableFileAccess);
 }
 
+bool ExtensionApiTest::RunExtensionTestWithArg(
+    const std::string& extension_name,
+    const char* custom_arg) {
+  return RunExtensionTestImpl(extension_name, std::string(), custom_arg,
+                              kFlagEnableFileAccess);
+}
+
 bool ExtensionApiTest::RunExtensionTestIncognito(
     const std::string& extension_name) {
   return RunExtensionTestImpl(extension_name,
                               std::string(),
                               NULL,
                               kFlagEnableIncognito | kFlagEnableFileAccess);
 }
 
 bool ExtensionApiTest::RunExtensionTestIgnoreManifestWarnings(
     const std::string& extension_name) {
@@ skipping 231 matching lines @@
 }
 
 void ExtensionApiTest::SetUpCommandLine(base::CommandLine* command_line) {
   ExtensionBrowserTest::SetUpCommandLine(command_line);
   test_data_dir_ = test_data_dir_.AppendASCII("api_test");
   // Backgrounded renderer processes run at a lower priority, causing the
   // tests to take more time to complete. Disable backgrounding so that the
   // tests don't time out.
   command_line->AppendSwitch(switches::kDisableRendererBackgrounding);
 }