Update some host_resolver()->AddRules in chrome/browser.

chrome/browser/extensions/extension_unload_browsertest.cc

 // Copyright 2016 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_browsertest.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/test/base/ui_test_utils.h"
 #include "content/public/browser/render_frame_host.h"
 #include "content/public/test/browser_test_utils.h"
 #include "net/dns/mock_host_resolver.h"
 #include "net/test/embedded_test_server/embedded_test_server.h"
 #include "ui/base/window_open_disposition.h"
 
 namespace extensions {
 
-using ExtensionUnloadBrowserTest = ExtensionBrowserTest;
+class ExtensionUnloadBrowserTest : public ExtensionBrowserTest {
+ public:
+  void SetUpOnMainThread() override {
+    ExtensionBrowserTest::SetUpOnMainThread();
+    host_resolver()->AddRule("maps.google.com", "127.0.0.1");
+  }
+};
 
 IN_PROC_BROWSER_TEST_F(ExtensionUnloadBrowserTest, TestUnload) {
   // Load an extension that installs unload and beforeunload listeners.
   const Extension* extension =
       LoadExtension(test_data_dir_.AppendASCII("unload_listener"));
   ASSERT_TRUE(extension);
   std::string id = extension->id();
   ASSERT_EQ(1, browser()->tab_strip_model()->count());
   GURL initial_tab_url =
       browser()->tab_strip_model()->GetWebContentsAt(0)->GetLastCommittedURL();
   ui_test_utils::NavigateToURLWithDisposition(
       browser(), extension->GetResourceURL("page.html"),
       WindowOpenDisposition::NEW_FOREGROUND_TAB,
       ui_test_utils::BROWSER_TEST_WAIT_FOR_NAVIGATION);
   EXPECT_EQ(2, browser()->tab_strip_model()->count());
   DisableExtension(id);
   // There should only be one remaining web contents - the initial one.
   ASSERT_EQ(1, browser()->tab_strip_model()->count());
   EXPECT_EQ(
       initial_tab_url,
       browser()->tab_strip_model()->GetWebContentsAt(0)->GetLastCommittedURL());
 }
 
 // After an extension is uninstalled, network requests from its content scripts
 // should fail but not kill the renderer process.
 IN_PROC_BROWSER_TEST_F(ExtensionUnloadBrowserTest, UnloadWithContentScripts) {
-  host_resolver()->AddRule("maps.google.com", "127.0.0.1");
   ASSERT_TRUE(embedded_test_server()->Start());
 
   // Load an extension with a content script that has a button to send XHRs.
   const Extension* extension =
       LoadExtension(test_data_dir_.AppendASCII("xhr_from_content_script"));
   ASSERT_TRUE(extension);
   std::string id = extension->id();
   ASSERT_EQ(1, browser()->tab_strip_model()->count());
   GURL test_url = embedded_test_server()->GetURL("/title1.html");
   ui_test_utils::NavigateToURL(browser(), test_url);
@@ skipping 26 matching lines @@
   EXPECT_TRUE(browser()
                   ->tab_strip_model()
                   ->GetActiveWebContents()
                   ->GetMainFrame()
                   ->IsRenderFrameLive());
 }
 
 // TODO(devlin): Investigate what to do for embedded iframes.
 
 }  // namespace extensions