[Fingerprint] Remove learn more link if not provisioned. DO NOT MERGE

Remove the learn more link during setup wizard, because HelpUtils is
returning null for the intent while the device is not provisioned.

Bug: 31246856
Change-Id: I4cf5c282f170188aef98a02d3b96af5e63ea7f39
(cherry picked from commit c94f2b93afa2db9d87f9d8e0dc0c8709f16a326d)
diff --git a/src/com/android/settings/fingerprint/FingerprintEnrollIntroduction.java b/src/com/android/settings/fingerprint/FingerprintEnrollIntroduction.java
index beb1a8f..bc2757a 100644
--- a/src/com/android/settings/fingerprint/FingerprintEnrollIntroduction.java
+++ b/src/com/android/settings/fingerprint/FingerprintEnrollIntroduction.java
@@ -20,6 +20,7 @@
 import android.content.Intent;
 import android.os.Bundle;
 import android.os.UserHandle;
+import android.provider.Settings.Global;
 import android.view.View;
 
 import com.android.internal.logging.MetricsLogger;
@@ -40,7 +41,11 @@
         setContentView(R.layout.fingerprint_enroll_introduction);
         setHeaderText(R.string.security_settings_fingerprint_enroll_introduction_title);
         findViewById(R.id.cancel_button).setOnClickListener(this);
-        findViewById(R.id.learn_more_button).setOnClickListener(this);
+        final View learnMoreButton = findViewById(R.id.learn_more_button);
+        learnMoreButton.setOnClickListener(this);
+        if (Global.getInt(getContentResolver(), Global.DEVICE_PROVISIONED, 0) == 0) {
+            learnMoreButton.setVisibility(View.GONE);
+        }
         final int passwordQuality = new ChooseLockSettingsHelper(this).utils()
                 .getActivePasswordQuality(UserHandle.myUserId());
         mHasPassword = passwordQuality != DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED;
@@ -91,7 +96,9 @@
     private void launchFingerprintHelp() {
         Intent helpIntent = HelpUtils.getHelpIntent(this,
                 getString(R.string.help_url_fingerprint), getClass().getName());
-        startActivity(helpIntent);
+        if (helpIntent != null) {
+            startActivity(helpIntent);
+        }
     }
 
     @Override