Re-enable more stable tests in StartSurfaceTest

In crrev.com/c/2209302, the following tests were disabled because they
were flaky on Android M builders and P emulators:
- testShow_TasksOnly
- testShow_TwoPanes
- testScroll_OmniboxOnly_Pinned

They are re-enabled on builders like android-pie-arm64-rel.

Bug: 1081822, 1084176, 1083459
Change-Id: Ie7e2c833ce5e475cc954318a5afacc35c7e8f9fc
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2315996Reviewed-by: Yue Zhang <yuezhanggg@chromium.org>
Commit-Queue: Wei-Yin Chen (陳威尹) <wychen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#799019}

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

@@ -68,7 +68,6 @@ import org.chromium.base.test.params.ParameterSet;
 import org.chromium.base.test.params.ParameterizedRunner;
 import org.chromium.base.test.util.CommandLineFlags;
 import org.chromium.base.test.util.DisableIf;
-import org.chromium.base.test.util.DisabledTest;
 import org.chromium.base.test.util.Feature;
 import org.chromium.base.test.util.Restriction;
 import org.chromium.chrome.browser.ChromeTabbedActivity;
@@ -197,7 +196,8 @@ public class StartSurfaceTest {
     @Test
     @MediumTest
     @Feature({"StartSurface"})
-    @DisabledTest(message = "crbug.com/1084176")
+    @DisableIf.Build(sdk_is_less_than = P, message = "crbug.com/1084176")
+    @DisableIf.Build(supported_abis_includes = "x86", message = "https://crbug.com/1084176")
     @CommandLineFlags.Add({BASE_PARAMS + "/tasksonly"})
     public void testShow_TasksOnly() {
         final ChromeTabbedActivity cta = mActivityTestRule.getActivity();
@@ -335,7 +335,8 @@ public class StartSurfaceTest {
     @Test
     @MediumTest
     @Feature({"StartSurface"})
-    @DisabledTest(message = "crbug.com/1081822")
+    @DisableIf.Build(sdk_is_less_than = P, message = "crbug.com/1081822")
+    @DisableIf.Build(supported_abis_includes = "x86", message = "https://crbug.com/1081822")
     @CommandLineFlags.Add({BASE_PARAMS + "/twopanes"})
     public void testShow_TwoPanes() {
         final ChromeTabbedActivity cta = mActivityTestRule.getActivity();
@@ -918,7 +919,8 @@ public class StartSurfaceTest {
     @MediumTest
     @Feature({"StartSurface"})
     // clang-format off
-    @DisabledTest(message = "crbug.com/1083459")
+    @DisableIf.Build(sdk_is_less_than = P, message = "crbug.com/1083459")
+    @DisableIf.Build(supported_abis_includes = "x86", message = "https://crbug.com/1083459")
     @CommandLineFlags.Add({BASE_PARAMS + "/omniboxonly" +
         "/hide_switch_when_no_incognito_tabs/true/omnibox_scroll_mode/pinned"})
     public void testScroll_Pinned() {