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

chrome/browser/sync/glue/session_change_processor.h

Index: chrome/browser/sync/glue/session_change_processor.h
diff --git a/chrome/browser/sync/glue/session_change_processor.h b/chrome/browser/sync/glue/session_change_processor.h
index 9d772daff4cab607e44147fa350edeaef0c741bb..b8bcc8f2d0056697f21c26cec67c3fb9dd595683 100644
--- a/chrome/browser/sync/glue/session_change_processor.h
+++ b/chrome/browser/sync/glue/session_change_processor.h
@@ -35,6 +35,10 @@ class SessionChangeProcessor : public ChangeProcessor,
   SessionChangeProcessor(
       UnrecoverableErrorHandler* error_handler,
       SessionModelAssociator* session_model_associator);
+  SessionChangeProcessor(
+      UnrecoverableErrorHandler* error_handler,
+      SessionModelAssociator* session_model_associator,
+      bool setup_for_test);
   virtual ~SessionChangeProcessor();
 
   // NotificationObserver implementation.
@@ -63,6 +67,9 @@ class SessionChangeProcessor : public ChangeProcessor,
   // Owner of the SessionService.  Non-NULL iff |running()| is true.
   Profile* profile_;
 
+  // To bypass some checks/codepaths not applicable in tests.
+  bool setup_for_test_;
+
   DISALLOW_COPY_AND_ASSIGN(SessionChangeProcessor);
 };