Added retry policy

chrome/test/BUILD.gn

Index: chrome/test/BUILD.gn
diff --git a/chrome/test/BUILD.gn b/chrome/test/BUILD.gn
index 7919fd0e56a18e82a561488ed9775fb61df3e295..b33b1ae34ad669dce51af6e82c3f8ae1f4ce1974 100644
--- a/chrome/test/BUILD.gn
+++ b/chrome/test/BUILD.gn
@@ -1291,6 +1291,8 @@ test("browser_tests") {
         "//ppapi/native_client:irt",
       ]
     }
+
+    deps += [ "//chrome/browser/chromeos:test_support" ]
   }
 
   # TODO(jbudorick): In progress. See crbug.com/611756
@@ -2247,12 +2249,8 @@ test("browser_tests") {
         "../browser/chromeos/login/easy_unlock/bootstrap_browsertest.cc",
         "../browser/chromeos/login/enable_debugging_browsertest.cc",
         "../browser/chromeos/login/enrollment/enrollment_screen_browsertest.cc",
-        "../browser/chromeos/login/enrollment/enterprise_enrollment_helper_mock.cc",
-        "../browser/chromeos/login/enrollment/enterprise_enrollment_helper_mock.h",
         "../browser/chromeos/login/enrollment/mock_auto_enrollment_check_screen.cc",
         "../browser/chromeos/login/enrollment/mock_auto_enrollment_check_screen.h",
-        "../browser/chromeos/login/enrollment/mock_enrollment_screen.cc",
-        "../browser/chromeos/login/enrollment/mock_enrollment_screen.h",
         "../browser/chromeos/login/enterprise_enrollment_browsertest.cc",
         "../browser/chromeos/login/existing_user_controller_browsertest.cc",
         "../browser/chromeos/login/hid_detection_browsertest.cc",
@@ -2272,8 +2270,6 @@ test("browser_tests") {
         "../browser/chromeos/login/resource_loader_browsertest.cc",
         "../browser/chromeos/login/saml/saml_browsertest.cc",
         "../browser/chromeos/login/screens/hid_detection_screen_browsertest.cc",
-        "../browser/chromeos/login/screens/mock_base_screen_delegate.cc",
-        "../browser/chromeos/login/screens/mock_base_screen_delegate.h",
         "../browser/chromeos/login/screens/mock_enable_debugging_screen.cc",
         "../browser/chromeos/login/screens/mock_enable_debugging_screen.h",
         "../browser/chromeos/login/screens/mock_error_screen.cc",