Improve transition between opaque and translucent compositor views.

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.TargetApi;
 import android.app.Activity;
 import android.app.ActivityManager;
 import android.content.Context;
@@ skipping 1591 matching lines @@
      * See VrShellDelegate#isVrShellEnabled()
      */
     @Override
     public boolean isVrShellEnabled() {
         return mVrShellDelegate.isVrShellEnabled();
     }
 
     // TODO(mthiesse): Toggle toolbar overlay, popups, etc.
     public void setUIVisibilityForVR(int visibility) {
         mControlContainer.setVisibility(visibility);
-        getCompositorViewHolder().getSurfaceView().setVisibility(visibility);
+        getCompositorViewHolder().getCompositorView().setVisibility(visibility);
         getCompositorViewHolder().setVisibility(visibility);
     }
 
     /**
      * 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(25)
     private void reportNewTabShortcutUsed(boolean isIncognito) {
         if (!BuildInfo.isGreaterThanN()) return;
 
         try {
             Class<?> clazz = Class.forName("android.content.pm.ShortcutManager");
             Method method = clazz.getDeclaredMethod("reportShortcutUsed", String.class);
             method.invoke(getSystemService(clazz),
                     isIncognito ? "new-incognito-tab-shortcut" : "new-tab-shortcut");
         } catch (Exception e) {
             e.printStackTrace();
         }
     }
 
     public VrShellDelegate getVrShellDelegate() {
         return mVrShellDelegate;
     }
 }