[Sync] Initial support for encrypting any datatype (no UI hookup yet).

chrome/browser/sync/glue/session_model_associator.h

Index: chrome/browser/sync/glue/session_model_associator.h
diff --git a/chrome/browser/sync/glue/session_model_associator.h b/chrome/browser/sync/glue/session_model_associator.h
index 7864c1235b4f8e7ca031139975ba4f6635764baf..69cec565137fb53f5f2d1100b4a7651d18805c89 100644
--- a/chrome/browser/sync/glue/session_model_associator.h
+++ b/chrome/browser/sync/glue/session_model_associator.h
@@ -53,6 +53,8 @@ class SessionModelAssociator
  public:
   // Does not take ownership of sync_service.
   explicit SessionModelAssociator(ProfileSyncService* sync_service);
+  SessionModelAssociator(ProfileSyncService* sync_service,
+                         bool setup_for_test);
   virtual ~SessionModelAssociator();
 
   // The has_nodes out parameter is set to true if the sync model has
@@ -399,6 +401,9 @@ class SessionModelAssociator
   // Consumer used to obtain the current session.
   CancelableRequestConsumer consumer_;
 
+  // To avoid certain checks not applicable to tests.
+  bool setup_for_test_;
+
   DISALLOW_COPY_AND_ASSIGN(SessionModelAssociator);
 };