Disable SendTabToSelf in VR test

Disables the SendTabToSelf feature in
WebXrVrTransitionTest#testNonImmersiveStopsDuringImmersive, as it's
suspected that the feature is the cause of recent flakiness.

TBR=bialpio@chromium.org

Bug: 986580
Change-Id: Ic1b22a9ba48d5c96729c4e57439c590dcdd1ca35
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1729537Reviewed-by: Brian Sheedy <bsheedy@chromium.org>
Commit-Queue: Brian Sheedy <bsheedy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#682835}

chrome/android/javatests/src/org/chromium/chrome/browser/vr/WebXrVrTransitionTest.java

@@ -43,6 +43,7 @@ import org.chromium.base.test.util.MinAndroidSdkLevel;
 import org.chromium.base.test.util.Restriction;
 import org.chromium.base.test.util.UrlUtils;
 import org.chromium.chrome.browser.ChromeActivity;
+import org.chromium.chrome.browser.ChromeFeatureList;
 import org.chromium.chrome.browser.ChromeSwitches;
 import org.chromium.chrome.browser.vr.rules.VrSettingsFile;
 import org.chromium.chrome.browser.vr.rules.XrActivityRestriction;
@@ -54,6 +55,7 @@ import org.chromium.chrome.browser.vr.util.VrTestRuleUtils;
 import org.chromium.chrome.browser.vr.util.VrTransitionUtils;
 import org.chromium.chrome.test.ChromeActivityTestRule;
 import org.chromium.chrome.test.ChromeJUnit4RunnerDelegate;
+import org.chromium.chrome.test.util.browser.Features.DisableFeatures;
 import org.chromium.content_public.browser.test.util.CriteriaHelper;
 
 import java.io.File;
@@ -480,6 +482,7 @@ public class WebXrVrTransitionTest {
             .Remove({"enable-webvr"})
             @CommandLineFlags.Add({"enable-features=WebXR"})
             @XrActivityRestriction({XrActivityRestriction.SupportedActivity.ALL})
+            @DisableFeatures(ChromeFeatureList.SEND_TAB_TO_SELF)
             public void testNonImmersiveStopsDuringImmersive() throws InterruptedException {
         mWebXrVrTestFramework.loadUrlAndAwaitInitialization(
                 WebXrVrTestFramework.getFileUrlForHtmlTestFile(