Re-enable context menu tests

Bug: 989550
Change-Id: Ib20196500921be1d0c5adc305e5a5eca56132991
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1804214Reviewed-by: Kurt Horimoto <kkhorimoto@chromium.org>
Reviewed-by: Eric Noyau <noyau@chromium.org>
Commit-Queue: Eric Noyau <noyau@chromium.org>
Auto-Submit: Mike Dougherty <michaeldo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#697270}

ios/chrome/browser/context_menu/context_menu_egtest.mm

@@ -162,13 +162,6 @@ void SelectTabAtIndexInCurrentMode(NSUInteger index) {
 
 @implementation ContextMenuTestCase
 
-// TODO(crbug.com/989550) Disable broken context menu tests on Xcode 11 beta 5.
-+ (NSArray*)testInvocations {
-  if (@available(iOS 13, *))
-    return @[];
-  return [super testInvocations];
-}
-
 + (void)setUp {
   [super setUp];
   [ChromeEarlGrey setContentSettings:CONTENT_SETTING_ALLOW];
@@ -263,9 +256,10 @@ void SelectTabAtIndexInCurrentMode(NSUInteger index) {
       CGRectGetMidX([chrome_test_util::GetActiveViewController() view].bounds),
       topInset + 20.0);
 
+  // Duration should match |kContextMenuLongPressDuration| as defined in
+  // web_view_actions.mm.
   [[EarlGrey selectElementWithMatcher:WebViewMatcher()]
-      performAction:grey_longPressAtPointWithDuration(
-                        point, kGREYLongPressDefaultDuration)];
+      performAction:grey_longPressAtPointWithDuration(point, 1.0)];
 
   TapOnContextMenuButton(OpenImageInNewTabButton());
   [ChromeEarlGrey waitForMainTabCount:2];

ios/chrome/browser/ui/dialogs/javascript_dialog_egtest.mm

@@ -575,11 +575,6 @@ void TapSuppressDialogsButton() {
 
 // Tests that an alert is presented after a new tab animation is finished.
 - (void)testShowJavaScriptAfterNewTabAnimation {
-  // TODO(crbug.com/989550) Disable broken context menu tests on Xc11b5.
-  if (@available(iOS 13, *)) {
-    EARL_GREY_TEST_DISABLED(@"Test disabled on iOS13.");
-  }
-
   // Load the test page with a link to kOnLoadAlertURL and long tap on the link.
   [self loadPageWithLink];