[Instant Start] Disable StartSurfaceTest#testShow_SingleAsTabSwitcher_V2__Instant_Return

Bug: 1132948, 1076274
Change-Id: Ib0047b913bd7a844f7a59b36d6e4e40b097f4a5d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2443543Reviewed-by: Wei-Yin Chen (陳威尹) <wychen@chromium.org>
Commit-Queue: Xi Han <hanxi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#812952}

chrome/android/features/start_surface/internal/javatests/src/org/chromium/chrome/features/start_surface/StartSurfaceTest.java

@@ -753,9 +753,16 @@ public class StartSurfaceTest {
                             && mActivityTestRule.getActivity()
                                        .getLayoutManager()
                                        .overviewVisible());
+            waitForTabModel();
             // Single surface is shown as homepage. Exit in order to get into tab switcher later.
             pressBack();
         }
+        if (isInstantReturn()) {
+            // TODO(crbug.com/1076274): fix toolbar to avoid wrongly focusing on the toolbar
+            // omnibox.
+            return;
+        }
+
         TabUiTestHelper.enterTabSwitcher(mActivityTestRule.getActivity());
         waitForView(withId(R.id.primary_tasks_surface_view), VIEW_GONE);
         assertThat(mActivityTestRule.getActivity().getLayoutManager().getOverviewLayout(),