android: Further relax LifetimeAssert check

Some N bots are also causing failures from Activities not being
destroyed, just more flakily than on L. Expand the check in
LifetimeAssertRule to all versions.

Bug: 1081250
Change-Id: I3d8330988b8aca47b66084d9bc43b82d0a53b240
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2216535Reviewed-by: Andrew Grieve <agrieve@chromium.org>
Commit-Queue: Bo <boliu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#771988}

base/test/android/javatests/src/org/chromium/base/test/LifetimeAssertRule.java

@@ -4,8 +4,6 @@
 
 package org.chromium.base.test;
 
-import android.os.Build;
-
 import org.junit.rules.TestRule;
 import org.junit.runner.Description;
 import org.junit.runners.model.Statement;
@@ -31,10 +29,9 @@ public class LifetimeAssertRule implements TestRule {
 
     private void maybeAssertLifetime() {
         // There is a bug on L and below that DestroyActivitiesRule does not cause onStop and
-        // onDestroy. Ignore lifetime asserts if that is the case.
-        if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.LOLLIPOP_MR1
-                && ApplicationStatus.isInitialized()
-                && !ApplicationStatus.isEveryActivityDestroyed()) {
+        // onDestroy. On other versions, DestroyActivitiesRule may still fail flakily. Ignore
+        // lifetime asserts if that is the case.
+        if (ApplicationStatus.isInitialized() && !ApplicationStatus.isEveryActivityDestroyed()) {
             return;
         }
         LifetimeAssert.assertAllInstancesDestroyedForTesting();