Commit all tab closures in LayoutManagerChromeTablet.tabModelSwitched()

chrome/android/java/src/org/chromium/chrome/browser/compositor/layouts/LayoutManagerChromeTablet.java

Index: chrome/android/java/src/org/chromium/chrome/browser/compositor/layouts/LayoutManagerChromeTablet.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/compositor/layouts/LayoutManagerChromeTablet.java b/chrome/android/java/src/org/chromium/chrome/browser/compositor/layouts/LayoutManagerChromeTablet.java
index 08a8c1bab273b76702c30cd4ad183b341b27dba6..7c91fb0154b195ce513abd7f2b6dd4c807577404 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/compositor/layouts/LayoutManagerChromeTablet.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/compositor/layouts/LayoutManagerChromeTablet.java
@@ -128,6 +128,12 @@ public class LayoutManagerChromeTablet extends LayoutManagerChrome {
     }
 
     @Override
+    protected void tabModelSwitched(boolean incognito) {
+        super.tabModelSwitched(incognito);
+        getTabModelSelector().commitAllTabClosures();
+    }
+
+    @Override
     public void init(TabModelSelector selector, TabCreatorManager creator,
             TabContentManager content, ViewGroup androidContentContainer,
             ContextualSearchManagementDelegate contextualSearchDelegate,