Change location of ensureAppLaunchedWithFeatures call for test case.

Moved ensureAppLaunchedWithFeatures from -setUp to overriding
launchAppForTestMethod to eliminate unnecessary relaunches. CQ bot run
results show significant improvement without the relaunches.

BUG: 1009017, 1010463

Change-Id: I650304daaa9e4271310e180635a8fb6ff865f717
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1854786Reviewed-by: Gauthier Ambard <gambard@chromium.org>
Commit-Queue: Zhaoyang Li <zhaoyangli@chromium.org>
Cr-Commit-Position: refs/heads/master@{#706521}

ios/chrome/browser/ui/settings/autofill/autofill_add_credit_card_egtest.mm

@@ -89,13 +89,16 @@ id<GREYMatcher> CardNumberIconView(NSString* icon_type) {
 
 @implementation AutofillAddCreditCardTestCase
 
-- (void)setUp {
-  [super setUp];
+- (void)launchAppForTestMethod {
   [[AppLaunchManager sharedManager]
       ensureAppLaunchedWithFeaturesEnabled:{kSettingsAddPaymentMethod,
                                             kCreditCardScanner}
                                   disabled:{}
                               forceRestart:NO];
+}
+
+- (void)setUp {
+  [super setUp];
   GREYAssertTrue([ChromeEarlGrey isSettingsAddPaymentMethodEnabled],
                  @"SettingsAddPaymentMethod should be enabled");
   GREYAssertTrue([ChromeEarlGrey isCreditCardScannerEnabled],