🤠 Disable two StartupLoadingMetricsTest's on x86 bot

Disable two tests that cause Pie x86 bot to flakily fail:
 - #testErrorPageNotRecorded
 - #testBackgroundedPageNotRecorded

TBR=alexilin@chromium.org
BUG=1062055

Change-Id: I1ddd909312dc4a51b97a8943bec828d6bf7951e2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2320084Reviewed-by: Theresa  <twellington@chromium.org>
Commit-Queue: Theresa  <twellington@chromium.org>
Cr-Commit-Position: refs/heads/master@{#791947}

chrome/android/javatests/src/org/chromium/chrome/browser/metrics/StartupLoadingMetricsTest.java

@@ -20,6 +20,7 @@ import org.junit.runner.RunWith;
 
 import org.chromium.base.metrics.RecordHistogram;
 import org.chromium.base.test.util.CommandLineFlags;
+import org.chromium.base.test.util.DisableIf;
 import org.chromium.base.test.util.DisabledTest;
 import org.chromium.chrome.browser.ChromeTabbedActivity;
 import org.chromium.chrome.browser.ShortcutHelper;
@@ -198,6 +199,7 @@ public class StartupLoadingMetricsTest {
      */
     @Test
     @LargeTest
+    @DisableIf.Build(supported_abis_includes = "x86", message = "https://crbug.com/1062055")
     public void testErrorPageNotRecorded() throws Exception {
         runAndWaitForPageLoadMetricsRecorded(
                 () -> mTabbedActivityTestRule.startMainActivityWithURL(mErrorPage));
@@ -225,6 +227,7 @@ public class StartupLoadingMetricsTest {
      */
     @Test
     @LargeTest
+    @DisableIf.Build(supported_abis_includes = "x86", message = "https://crbug.com/1062055")
     public void testBackgroundedPageNotRecorded() throws Exception {
         runAndWaitForPageLoadMetricsRecorded(() -> {
             Intent intent = new Intent(Intent.ACTION_VIEW);