Ensure CATEGORY_LAUNCHER exists for MAIN intents for NTP inactivity/logging.

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

Index: chrome/android/javatests/src/org/chromium/chrome/browser/metrics/MainIntentBehaviorMetricsIntegrationTest.java
diff --git a/chrome/android/javatests/src/org/chromium/chrome/browser/metrics/MainIntentBehaviorMetricsIntegrationTest.java b/chrome/android/javatests/src/org/chromium/chrome/browser/metrics/MainIntentBehaviorMetricsIntegrationTest.java
index 0468f4324d77b0c0d04e26e27af6c0873eb1eadb..0a408c5914b03468f7b33a72b60474ae14b7fde6 100644
--- a/chrome/android/javatests/src/org/chromium/chrome/browser/metrics/MainIntentBehaviorMetricsIntegrationTest.java
+++ b/chrome/android/javatests/src/org/chromium/chrome/browser/metrics/MainIntentBehaviorMetricsIntegrationTest.java
@@ -4,8 +4,10 @@
 
 package org.chromium.chrome.browser.metrics;
 
+import android.content.Intent;
 import android.support.test.filters.MediumTest;
 
+import org.junit.Assert;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -122,6 +124,15 @@ public class MainIntentBehaviorMetricsIntegrationTest {
         }
     }
 
+    @MediumTest
+    @Test
+    public void testMainIntentWithLauncherCategory() throws InterruptedException {
+        mActivityTestRule.startMainActivityFromIntent(new Intent(Intent.ACTION_MAIN), null);
+        assertMainIntentBehavior(null);
+        Assert.assertFalse(mActivityTestRule.getActivity().getMainIntentBehaviorMetricsForTesting()
+                .getPendingActionRecordForMainIntent());
+    }
+
     private void assertMainIntentBehavior(Integer expected) {
         CriteriaHelper.pollUiThread(Criteria.equals(expected, new Callable<Integer>() {
             @Override