[Sheriff] disable StartSurfaceLayoutTest#testSwipeToDismiss_GTS &...

[Sheriff] disable StartSurfaceLayoutTest#testSwipeToDismiss_GTS & testThumbnailAspectRatio_fromTwoToPoint75

TBR=yuezhanggg@chromium.org, wychen@chromium.org

Bug: 1124041
Change-Id: I29f52093d1f0b917e29f382defc65ad3cf2326cd
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2389101Reviewed-by: Lijin Shen <lazzzis@google.com>
Commit-Queue: Lijin Shen <lazzzis@google.com>
Cr-Commit-Position: refs/heads/master@{#803686}

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

@@ -1107,6 +1107,7 @@ public class StartSurfaceLayoutTest {
     @Test
     @MediumTest
     @CommandLineFlags.Add({BASE_PARAMS + "/thumbnail_aspect_ratio/2.0/allow_to_refetch/true"})
+    @DisabledTest(message = "Flaky - https://crbug.com/1124041")
     public void testThumbnailAspectRatio_fromTwoToPoint75() throws Exception {
         prepareTabs(2, 0, mUrl);
         enterTabSwitcher(mActivityTestRule.getActivity());
@@ -1421,6 +1422,7 @@ public class StartSurfaceLayoutTest {
     @MediumTest
     @CommandLineFlags.Add({BASE_PARAMS})
     @EnableFeatures({ChromeFeatureList.TAB_GROUPS_ANDROID})
+    @DisabledTest(message = "Flaky - https://crbug.com/1124041")
     public void testSwipeToDismiss_GTS() {
         ChromeTabbedActivity cta = mActivityTestRule.getActivity();
         // Create 3 tabs and merge the first two tabs into one group.