[vr] Show DOFF when starting Chrome with a VR intent without FRE completion

chrome/android/java/src/org/chromium/chrome/browser/vr_shell/VrShellDelegate.java

Index: chrome/android/java/src/org/chromium/chrome/browser/vr_shell/VrShellDelegate.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/vr_shell/VrShellDelegate.java b/chrome/android/java/src/org/chromium/chrome/browser/vr_shell/VrShellDelegate.java
index 0914c3a1337e8f19d71d1ca6cac30f15f6e4e0c7..4eb49b6d878259994654058def59454bff12f5f2 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/vr_shell/VrShellDelegate.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/vr_shell/VrShellDelegate.java
@@ -93,6 +93,7 @@ public class VrShellDelegate implements ApplicationStatus.ActivityStateListener,
 
     private static final String DAYDREAM_VR_EXTRA = "android.intent.extra.VR_LAUNCH";
     private static final String DAYDREAM_HOME_PACKAGE = "com.google.android.vr.home";
+    static final String VR_FRE_INTENT_EXTRA = "org.chromium.chrome.browser.vr_shell.VR_FRE";
 
     // Linter and formatter disagree on how the line below should be formatted.
     /* package */
@@ -412,7 +413,7 @@ public class VrShellDelegate implements ApplicationStatus.ActivityStateListener,
     }
 
     @SuppressWarnings("unchecked")
-    private static VrClassesWrapper createVrClassesWrapper() {
+    /* package */ static VrClassesWrapper createVrClassesWrapper() {
         try {
             Class<? extends VrClassesWrapper> vrClassesBuilderClass =
                     (Class<? extends VrClassesWrapper>) Class.forName(
@@ -841,6 +842,19 @@ public class VrShellDelegate implements ApplicationStatus.ActivityStateListener,
         }
     }
 
+    /**
+     * @return An intent that will launch a VR activity that will prompt the
+     * user to take off their headset and foward the freIntent to the standard
+     * 2D FRE activity.
+     */
+    public static Intent setupVrFreIntent(Context context, Intent freIntent) {
+        Intent intent = new Intent();
+        intent.setClassName(context, VrFirstRunActivity.class.getName());
+        intent.putExtra(VR_FRE_INTENT_EXTRA, new Intent(freIntent));
+        intent.putExtra(DAYDREAM_VR_EXTRA, true);
+        return intent;
+    }
+
     /**
      * @return Whether or not the given intent is a VR-specific intent.
      */
@@ -848,6 +862,13 @@ public class VrShellDelegate implements ApplicationStatus.ActivityStateListener,
         return IntentUtils.safeGetBooleanExtra(intent, DAYDREAM_VR_EXTRA, false);
     }
 
+    /*
+     * Remove VR-specific extras from the given intent.
+     */
+    public static void removeVrExtras(Intent intent) {
+        intent.removeExtra(DAYDREAM_VR_EXTRA);
+    }
+
     /**
      * @return Options that a VR-specific Chrome activity should be launched with.
      */