[ios] Disables the StackView egtests when the StackView is not enabled.

BUG=825431

Cq-Include-Trybots: master.tryserver.chromium.mac:ios-simulator-cronet;master.tryserver.chromium.mac:ios-simulator-full-configs
Change-Id: I95f5f986900aa31f4a484a36c0fbd789cf2b3c5e
Reviewed-on: https://chromium-review.googlesource.com/995916Reviewed-by: edchin <edchin@chromium.org>
Commit-Queue: Rohit Rao <rohitrao@chromium.org>
Cr-Commit-Position: refs/heads/master@{#548116}

ios/chrome/browser/ui/stack_view/BUILD.gn

@@ -128,6 +128,7 @@ source_set("eg_tests") {
     "//ios/chrome/browser/browser_state",
     "//ios/chrome/browser/tabs",
     "//ios/chrome/browser/ui:ui_internal",
+    "//ios/chrome/browser/ui/tab_switcher:modes",
     "//ios/chrome/browser/ui/toolbar/buttons",
     "//ios/chrome/browser/ui/toolbar/legacy",
     "//ios/chrome/browser/ui/toolbar/public",

ios/chrome/browser/ui/stack_view/stack_view_egtest.mm

@@ -16,6 +16,7 @@
 #import "ios/chrome/browser/ui/stack_view/card_view.h"
 #import "ios/chrome/browser/ui/stack_view/stack_view_controller.h"
 #import "ios/chrome/browser/ui/stack_view/stack_view_controller_private.h"
+#include "ios/chrome/browser/ui/tab_switcher/tab_switcher_mode.h"
 #import "ios/chrome/browser/ui/toolbar/buttons/toolbar_constants.h"
 #import "ios/chrome/browser/ui/toolbar/legacy/toolbar_controller_constants.h"
 #include "ios/chrome/browser/ui/tools_menu/public/tools_menu_constants.h"
@@ -187,9 +188,11 @@ void SelectTabUsingStackView(Tab* tab) {
 
 // Switches between three Tabs via the stack view.
 - (void)testSwitchTabs {
-  // The StackViewController is only used on iPhones.
-  if (IsIPadIdiom())
-    EARL_GREY_TEST_SKIPPED(@"Stack view is not used on iPads.");
+  if (GetTabSwitcherMode() != TabSwitcherMode::STACK) {
+    EARL_GREY_TEST_SKIPPED(
+        @"TabSwitcher tests are not applicable in this configuration");
+  }
+
   // Open two additional Tabs.
   const NSUInteger kAdditionalTabCount = 2;
   for (NSUInteger i = 0; i < kAdditionalTabCount; ++i)
@@ -201,9 +204,11 @@ void SelectTabUsingStackView(Tab* tab) {
 
 // Tests closing a tab in the stack view.
 - (void)testCloseTab {
-  // The StackViewController is only used on iPhones.
-  if (IsIPadIdiom())
-    EARL_GREY_TEST_SKIPPED(@"Stack view is not used on iPads.");
+  if (GetTabSwitcherMode() != TabSwitcherMode::STACK) {
+    EARL_GREY_TEST_SKIPPED(
+        @"TabSwitcher tests are not applicable in this configuration");
+  }
+
   // Open the stack view and tap the close button on the current CardView.
   OpenStackView();
   StackViewController* stackViewController =
@@ -223,9 +228,11 @@ void SelectTabUsingStackView(Tab* tab) {
 
 // Tests closing all Tabs in the stack view.
 - (void)testCloseAllTabs {
-  // The StackViewController is only used on iPhones.
-  if (IsIPadIdiom())
-    EARL_GREY_TEST_SKIPPED(@"Stack view is not used on iPads.");
+  if (GetTabSwitcherMode() != TabSwitcherMode::STACK) {
+    EARL_GREY_TEST_SKIPPED(
+        @"TabSwitcher tests are not applicable in this configuration");
+  }
+
   // Open an incognito Tab.
   OpenNewIncognitoTabUsingStackView();
   GREYAssertEqual(chrome_test_util::GetIncognitoTabCount(), 1,
@@ -268,9 +275,11 @@ void SelectTabUsingStackView(Tab* tab) {
 
 // Tests that tapping on the inactive deck region switches modes.
 - (void)testSwitchingModes {
-  // The StackViewController is only used on iPhones.
-  if (IsIPadIdiom())
-    EARL_GREY_TEST_SKIPPED(@"Stack view is not used on iPads.");
+  if (GetTabSwitcherMode() != TabSwitcherMode::STACK) {
+    EARL_GREY_TEST_SKIPPED(
+        @"TabSwitcher tests are not applicable in this configuration");
+  }
+
   // Open an Incognito Tab then switch decks.
   OpenNewIncognitoTabUsingStackView();
   ShowDeckWithType(DeckType::INCOGNITO);
@@ -288,9 +297,10 @@ void SelectTabUsingStackView(Tab* tab) {
 // Tests that closing a Tab that has a queued dialog successfully cancels the
 // dialog.
 - (void)testCloseTabWithDialog {
-  // The StackViewController is only used on iPhones.
-  if (IsIPadIdiom())
-    EARL_GREY_TEST_SKIPPED(@"Stack view is not used on iPads.");
+  if (GetTabSwitcherMode() != TabSwitcherMode::STACK) {
+    EARL_GREY_TEST_SKIPPED(
+        @"TabSwitcher tests are not applicable in this configuration");
+  }
 
   // Load the blank test page so that JavaScript can be executed.
   const GURL kBlankPageURL = HttpServer::MakeUrl("http://blank-page");