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

chrome/browser/sync/profile_sync_service_harness.h

Index: chrome/browser/sync/profile_sync_service_harness.h
diff --git a/chrome/browser/sync/profile_sync_service_harness.h b/chrome/browser/sync/profile_sync_service_harness.h
index ddbfbe22f85dbfe6e0093289fa213078819d352f..18839c204479245391d9b69994047bbcd7e6c8dd 100644
--- a/chrome/browser/sync/profile_sync_service_harness.h
+++ b/chrome/browser/sync/profile_sync_service_harness.h
@@ -114,6 +114,14 @@ class ProfileSyncServiceHarness : public ProfileSyncServiceObserver {
   // Returns a snapshot of the current sync session.
   const SyncSessionSnapshot* GetLastSessionSnapshot() const;
 
+  // Encrypt the datatype |type|. This method will block while the sync backend
+  // host performs the encryption or a timeout is reached. Returns false if
+  // encryption failed, else true.
+  bool EnableEncryptionForType(syncable::ModelType type);
+
+  // Check if |type| is encrypted.
+  bool IsTypeEncrypted(syncable::ModelType type);
+
  private:
   friend class StateChangeTimeoutEvent;
 
@@ -139,6 +147,9 @@ class ProfileSyncServiceHarness : public ProfileSyncServiceObserver {
     // The sync client anticipates incoming updates leading to a new sync cycle.
     WAITING_FOR_UPDATES,
 
+    // The sync client anticipates encryption of new datatypes.
+    WAITING_FOR_ENCRYPTION,
+
     // The sync client cannot reach the server.
     SERVER_UNREACHABLE,