Don't hide the reparenting tab while detaching

chrome/android/java/src/org/chromium/chrome/browser/tabmodel/TabModelSelectorImpl.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.tabmodel;
 
 import android.content.Context;
 import android.os.Handler;
 
 import org.chromium.base.metrics.RecordHistogram;
@@ skipping 324 matching lines @@
 
     @Override
     public void requestToShowTab(Tab tab, TabSelectionType type) {
         boolean isFromExternalApp = tab != null
                 && tab.getLaunchType() == TabLaunchType.FROM_EXTERNAL_APP;
 
         if (mVisibleTab != tab && tab != null && !tab.isNativePage()) {
             TabModelImpl.startTabSwitchLatencyTiming(type);
         }
         if (mVisibleTab != null && mVisibleTab != tab && !mVisibleTab.needsReload()) {
-            if (mVisibleTab.isInitialized()) {
+            if (mVisibleTab.isInitialized() && !mVisibleTab.isDetachedForReparenting()) {
                 // TODO(dtrainor): Once we figure out why we can't grab a snapshot from the current
                 // tab when we have other tabs loading from external apps remove the checks for
                 // FROM_EXTERNAL_APP/FROM_NEW.
                 if (!mVisibleTab.isClosing()
                         && (!isFromExternalApp || type != TabSelectionType.FROM_NEW)) {
                     cacheTabBitmap(mVisibleTab);
                 }
                 mVisibleTab.hide();
                 mVisibleTab.setFullscreenManager(null);
                 mTabSaver.addTabToSaveQueue(mVisibleTab);
@@ skipping 41 matching lines @@
     public boolean isSessionRestoreInProgress() {
         return mSessionRestoreInProgress.get();
     }
 
     // TODO(tedchoc): Remove the need for this to be exposed.
     @Override
     public void notifyChanged() {
         super.notifyChanged();
     }
 }