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

chrome/browser/extensions/chrome_app_api_browsertest.cc

Index: chrome/browser/extensions/chrome_app_api_browsertest.cc
diff --git a/chrome/browser/extensions/chrome_app_api_browsertest.cc b/chrome/browser/extensions/chrome_app_api_browsertest.cc
index 8bbc52e43986bdab2dfee9060248ed268d9efb91..2c2340446c89640e3339ea72e79dda5d41b5e666 100644
--- a/chrome/browser/extensions/chrome_app_api_browsertest.cc
+++ b/chrome/browser/extensions/chrome_app_api_browsertest.cc
@@ -26,6 +26,12 @@
 using extensions::Extension;
 
 class ChromeAppAPITest : public ExtensionBrowserTest {
+  void SetUpOnMainThread() override {
+    ExtensionBrowserTest::SetUpOnMainThread();
+    host_resolver()->AddRule("*", "127.0.0.1");
+    ASSERT_TRUE(embedded_test_server()->Start());
+  }
+
  protected:
   bool IsAppInstalledInMainFrame() {
     return IsAppInstalledInFrame(
@@ -89,8 +95,6 @@ class ChromeAppAPITest : public ExtensionBrowserTest {
 };
 
 IN_PROC_BROWSER_TEST_F(ChromeAppAPITest, IsInstalled) {
-  host_resolver()->AddRule("*", "127.0.0.1");
-  ASSERT_TRUE(embedded_test_server()->Start());
   GURL app_url =
       embedded_test_server()->GetURL("app.com", "/extensions/test_file.html");
   GURL non_app_url = embedded_test_server()->GetURL(
@@ -168,8 +172,6 @@ IN_PROC_BROWSER_TEST_F(ChromeAppAPITest, IsInstalled) {
 }
 
 IN_PROC_BROWSER_TEST_F(ChromeAppAPITest, InstallAndRunningState) {
-  host_resolver()->AddRule("*", "127.0.0.1");
-  ASSERT_TRUE(embedded_test_server()->Start());
   GURL app_url = embedded_test_server()->GetURL(
       "app.com", "/extensions/get_app_details_for_frame.html");
   GURL non_app_url = embedded_test_server()->GetURL(
@@ -225,8 +227,6 @@ IN_PROC_BROWSER_TEST_F(ChromeAppAPITest, InstallAndRunningState) {
 }
 
 IN_PROC_BROWSER_TEST_F(ChromeAppAPITest, InstallAndRunningStateFrame) {
-  host_resolver()->AddRule("*", "127.0.0.1");
-  ASSERT_TRUE(embedded_test_server()->Start());
   GURL app_url = embedded_test_server()->GetURL(
       "app.com", "/extensions/get_app_details_for_frame_reversed.html");