Start unifying document-mode and tabbed-mode tab creation

chrome/android/java/src/org/chromium/chrome/browser/tabmodel/TabCreatorManager.java

 // Copyright 2014 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 org.chromium.chrome.browser.Tab;
 import org.chromium.chrome.browser.TabState;
 import org.chromium.chrome.browser.tabmodel.TabModel.TabLaunchType;
 import org.chromium.content_public.browser.LoadUrlParams;
@@ skipping 16 matching lines @@
          */
         Tab createNewTab(LoadUrlParams loadUrlParams, TabModel.TabLaunchType type, Tab parent);
 
         /**
          * On restore, allows us to create a frozen version of a tab using saved tab state we read
          * from disk.
          * @param state    The tab state that the tab can be restored from.
          * @param id       The id to give the new tab.
          * @param index    The index for where to place the tab.
          */
-        void createFrozenTab(TabState state, int id, int index);
+        Tab createFrozenTab(TabState state, int id, int index);
 
         /**
          * Creates a tab around the native web contents pointer.
          * @param webContents The web contents to create a tab around.
          * @param parentId    The id of the parent tab.
          * @param type        The TabLaunchType describing how this tab was created.
          * @return            The created tab.
          */
         Tab createTabWithWebContents(WebContents webContents, int parentId, TabLaunchType type);
 
@@ skipping 15 matching lines @@
         Tab launchUrl(String url, TabModel.TabLaunchType type);
     }
 
     /**
      * @return A {@link TabCreator} that will create either regular or incognito tabs.
      * @param incognito True if the method should return the TabCreator for incognito tabs, false
      *                  for regular tabs.
      */
     TabCreator getTabCreator(boolean incognito);
 }