Support autopresenting WebVr content.

chrome/android/java/src/org/chromium/chrome/browser/ChromeTabbedActivity.java

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.chrome.browser;
 
 import android.annotation.SuppressLint;
 import android.annotation.TargetApi;
 import android.app.Activity;
 import android.app.ActivityManager;
@@ skipping 1978 matching lines @@
         super.onEnterVr();
         mControlContainer.setVisibility(View.INVISIBLE);
     }
 
     @Override
     public void onExitVr() {
         super.onExitVr();
         mControlContainer.setVisibility(View.VISIBLE);
     }
 
+    @Override
+    public boolean canAutopresentVr() {
+        return true;
+    }
+
     /**
      * Reports that a new tab launcher shortcut was selected or an action equivalent to a shortcut
      * was performed.
      * @param isIncognito Whether the shortcut or action created a new incognito tab.
      */
     @TargetApi(Build.VERSION_CODES.N_MR1)
     private void reportNewTabShortcutUsed(boolean isIncognito) {
         if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N_MR1) return;
 
         ShortcutManager shortcutManager = getSystemService(ShortcutManager.class);
@@ skipping 31 matching lines @@
             if (info.id == sMergedInstanceTaskId) return true;
         }
         return false;
     }
 
     @Override
     public boolean supportsFullscreenActivity() {
         return true;
     }
 }