Allow fetching variations while FRE is showing on Android first run.

chrome/android/junit/src/org/chromium/chrome/browser/firstrun/FirstRunFlowSequencerTest.java

Index: chrome/android/junit/src/org/chromium/chrome/browser/firstrun/FirstRunFlowSequencerTest.java
diff --git a/chrome/android/junit/src/org/chromium/chrome/browser/firstrun/FirstRunFlowSequencerTest.java b/chrome/android/junit/src/org/chromium/chrome/browser/firstrun/FirstRunFlowSequencerTest.java
index 1f33d3469d0784978dc2764ba18ddc16683a9e60..2f1a51dfdba2e83eb1cade5f83084830003fe9fb 100644
--- a/chrome/android/junit/src/org/chromium/chrome/browser/firstrun/FirstRunFlowSequencerTest.java
+++ b/chrome/android/junit/src/org/chromium/chrome/browser/firstrun/FirstRunFlowSequencerTest.java
@@ -13,9 +13,6 @@ import android.accounts.Account;
 import android.app.Activity;
 import android.os.Bundle;
 
-import org.chromium.base.BaseChromiumApplication;
-import org.chromium.base.test.util.Feature;
-import org.chromium.testing.local.LocalRobolectricTestRunner;
 import org.junit.After;
 import org.junit.Before;
 import org.junit.Test;
@@ -25,6 +22,10 @@ import org.robolectric.annotation.Config;
 import org.robolectric.shadows.multidex.ShadowMultiDex;
 import org.robolectric.util.ActivityController;
 
+import org.chromium.base.BaseChromiumApplication;
+import org.chromium.base.test.util.Feature;
+import org.chromium.testing.local.LocalRobolectricTestRunner;
+
 /**
  * Tests FirstRunFlowSequencer which contains the core logic of what should be shown during the
  * first run.
@@ -60,8 +61,12 @@ public class FirstRunFlowSequencerTest {
         }
 
         @Override
-        public void onFlowIsKnown(Bundle freProperties) {
+        public void onFlowIsKnown(Bundle freProperties, Runnable setUpPropertiesPostNative) {
             calledOnFlowIsKnown = true;
+            if (setUpPropertiesPostNative != null) {
+                setUpPropertiesPostNative.run();
+                freProperties.remove(FirstRunActivity.POST_NATIVE_SETUP_NEEDED);
+            }
             returnedBundle = freProperties;
         }
 
@@ -122,7 +127,10 @@ public class FirstRunFlowSequencerTest {
     @Before
     public void setUp() throws Exception {
         mActivityController = Robolectric.buildActivity(Activity.class);
-        mSequencer = new TestFirstRunFlowSequencer(mActivityController.setup().get(), new Bundle());
+        Bundle launchProperties = new Bundle();
+        launchProperties.putBoolean(FirstRunActivity.EXTRA_USE_FRE_FLOW_SEQUENCER, true);
+        mSequencer =
+                new TestFirstRunFlowSequencer(mActivityController.setup().get(), launchProperties);
     }
 
     @After