Reenable flaky password manager test

As fix attempt to the test flakes has been landed in crrev.com/c/946848,
this patch re-enables the test to see if the fix works.

Bug: 814845
Change-Id: I2a9e0d98a172fc0cac7c0e87cc302acab04dc325
Reviewed-on: https://chromium-review.googlesource.com/942470Reviewed-by: Vasilii Sukhanov <vasilii@chromium.org>
Commit-Queue: Xiaocheng Hu <xiaochengh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#541890}

chrome/browser/password_manager/password_manager_browsertest.cc

@@ -1959,16 +1959,8 @@ IN_PROC_BROWSER_TEST_F(
   EXPECT_FALSE(prompt_observer->IsSavePromptShownAutomatically());
 }
 
-// https://crbug.com/814845 Flaky on macOS ASan.
-#if defined(ADDRESS_SANITIZER) && defined(OS_MACOSX)
-#define MAYBE_InFrameNavigationDoesNotClearPopupState \
-  DISABLED_InFrameNavigationDoesNotClearPopupState
-#else
-#define MAYBE_InFrameNavigationDoesNotClearPopupState \
-  InFrameNavigationDoesNotClearPopupState
-#endif
 IN_PROC_BROWSER_TEST_F(PasswordManagerBrowserTestBase,
-                       MAYBE_InFrameNavigationDoesNotClearPopupState) {
+                       InFrameNavigationDoesNotClearPopupState) {
   scoped_refptr<password_manager::TestPasswordStore> password_store =
       static_cast<password_manager::TestPasswordStore*>(
           PasswordStoreFactory::GetForProfile(