[Sync] Add logic to reassociate tab nodes after restart.

chrome/browser/sync/glue/session_model_associator_unittest.cc

 // Copyright (c) 2012 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.
 
 #include <string>
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
 #include "chrome/browser/sessions/session_types.h"
@@ skipping 172 matching lines @@
   MOCK_CONST_METHOD0(GetEntryCount, int());
   MOCK_CONST_METHOD0(GetPendingEntryIndex, int());
   MOCK_CONST_METHOD0(GetPendingEntry, content::NavigationEntry*());
   MOCK_CONST_METHOD1(GetEntryAtIndex, content::NavigationEntry*(int i));
   MOCK_CONST_METHOD0(GetActiveEntry, content::NavigationEntry*());
   MOCK_CONST_METHOD0(ProfileIsManaged, bool());
   MOCK_CONST_METHOD0(GetBlockedNavigations,
                      const std::vector<const content::NavigationEntry*>*());
   MOCK_CONST_METHOD0(IsPinned, bool());
   MOCK_CONST_METHOD0(HasWebContents, bool());
+  MOCK_CONST_METHOD0(GetSyncId, int64());
+  MOCK_METHOD1(SetSyncId, void(int64));
 };
 
 class SyncRefreshListener : public content::NotificationObserver {
  public:
   SyncRefreshListener() : notified_of_refresh_(false) {
     registrar_.Add(this, chrome::NOTIFICATION_SYNC_REFRESH_LOCAL,
         content::NotificationService::AllSources());
   }
 
   virtual void Observe(int type,
@@ skipping 344 matching lines @@
   // The new page should be mapped to the old favicon data.
   EXPECT_TRUE(FaviconEquals(GURL(page_url2), std::string()));
   LoadTabFavicon(tab2);
   EXPECT_TRUE(FaviconEquals(GURL(page_url), favicon));
   EXPECT_TRUE(FaviconEquals(GURL(page_url2), favicon));
 }
 
 }  // namespace
 
 }  // namespace browser_sync