Depend on stored sync session GUID for Android.

chrome/browser/sync/glue/session_model_associator.h

 // 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.
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_SESSION_MODEL_ASSOCIATOR_H_
 #define CHROME_BROWSER_SYNC_GLUE_SESSION_MODEL_ASSOCIATOR_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 455 matching lines @@
   // Returns true if this tab belongs to this profile and belongs to a window,
   // false otherwise.
   bool IsValidTab(const SyncedTabDelegate& tab) const;
 
   // Having a valid entry is defined as the url being valid and and having a
   // syncable scheme (non chrome:// and file:// url's). In other words, we don't
   // want to sync a tab that is nothing but chrome:// and file:// navigations or
   // invalid url's.
   bool TabHasValidEntry(const SyncedTabDelegate& tab) const;
 
+  // Given a transaction, returns the GUID-based string that should be used for
+  // |current_machine_tag_|.
+  std::string GetMachineTagFromTransaction(syncer::WriteTransaction* trans);

[Nicolas Zea, 2012/11/16 18:55:20]

this can be an anon namespace method in the cc file.

[nyquist, 2012/12/04 01:55:05]

Done.

+
   // For testing only.
   size_t NumFaviconsForTesting() const;
 
   // For testing only.
   void QuitLoopForSubtleTesting();
 
   // Unique client tag.
   std::string current_machine_tag_;
 
   // User-visible machine name.
@@ skipping 63 matching lines @@
   std::map<std::string, linked_ptr<SyncedFaviconInfo> > synced_favicons_;
   // Map of page URL -> favicon url.
   std::map<std::string, std::string> synced_favicon_pages_;
 
   DISALLOW_COPY_AND_ASSIGN(SessionModelAssociator);
 };
 
 }  // namespace browser_sync
 
 #endif  // CHROME_BROWSER_SYNC_GLUE_SESSION_MODEL_ASSOCIATOR_H_