Sync: Improve handling of database load failures

chrome/browser/sync/glue/sync_backend_host.h

Index: chrome/browser/sync/glue/sync_backend_host.h
diff --git a/chrome/browser/sync/glue/sync_backend_host.h b/chrome/browser/sync/glue/sync_backend_host.h
index 81af6a9233ff88d35d888a2dde10ef4a6d9fb14b..bc9feca22f5d024f3f8e021503b3deaade5d7b28 100644
--- a/chrome/browser/sync/glue/sync_backend_host.h
+++ b/chrome/browser/sync/glue/sync_backend_host.h
@@ -183,10 +183,11 @@ class SyncBackendHost {
   virtual void StopSyncingForShutdown();
 
   // Called on |frontend_loop_| to kick off shutdown.
-  // |sync_disabled| indicates if syncing is being disabled or not.
-  // See the implementation and Core::DoShutdown for details.
-  // Must be called *after* StopSyncingForShutdown.
-  void Shutdown(bool sync_disabled);
+  // |delete_stale_data| indicates whether or not we should delete the local
+  // sync database.
+  // See the implementation and Core::DoShutdown for details.  Must be called
+  // *after* StopSyncingForShutdown.
+  void Shutdown(bool delete_stale_data);
 
   // Changes the set of data types that are currently being synced.
   // The ready_task will be run when all of the requested data types
@@ -388,7 +389,7 @@ class SyncBackendHost {
     //    safe order because the thread that was using them has exited
     //    (in step 2).
     void DoStopSyncManagerForShutdown(const base::Closure& closure);
-    void DoShutdown(bool stopping_sync);
+    void DoShutdown(bool delete_stale_data);
 
     virtual void DoRequestConfig(
         const syncable::ModelTypeBitSet& types_to_config,