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

chrome/test/live_sync/multiple_client_live_sessions_sync_test.cc

 // Copyright (c) 2011 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.
 
 #include "base/stringprintf.h"
 #include "chrome/browser/sessions/session_service.h"
 #include "chrome/browser/sync/profile_sync_service.h"
 #include "chrome/test/live_sync/live_sessions_sync_test.h"
 
 IN_PROC_BROWSER_TEST_F(MultipleClientLiveSessionsSyncTest, AllChanged) {
@@ skipping 15 matching lines @@
   // Wait for sync.
   ASSERT_TRUE(AwaitQuiescence());
 
   // Get foreign session data from all clients and check it against all
   // client_windows.
   for (int i = 0; i < num_clients(); ++i) {
     ASSERT_TRUE(CheckForeignSessionsAgainst(i, client_windows));
   }
 }
 
+IN_PROC_BROWSER_TEST_F(MultipleClientLiveSessionsSyncTest,
+    EncryptedAndChanged) {
+  ASSERT_TRUE(SetupSync()) << "SetupSync() failed.";
+  std::vector<std::vector<SessionWindow*>* > client_windows;
+
+  for (int i = 0; i < num_clients(); ++i) {
+    ASSERT_TRUE(CheckInitialState(i));
+  }
+
+  // Enable encryption on client 0, should propagate to all other clients.
+  ASSERT_TRUE(EnableEncryption(0));
+
+  // Wait for sync.
+  // TODO(zea): Fix sync completion detection so we don't need this. For now,
+  // the profile sync service harness detects completion before all encryption
+  // changes are propagated.
+  ASSERT_TRUE(GetClient(0)->AwaitGroupSyncCycleCompletion(clients()));
+
+  // Open tabs on all clients and retain window information.
+  for (int i = 0; i < num_clients(); ++i) {
+    std::vector<SessionWindow*>* new_windows =
+        InitializeNewWindowWithTab(i, GURL(StringPrintf("about:bubba%i", i)));
+    ASSERT_TRUE(new_windows);
+    client_windows.push_back(new_windows);
+  }
+
+  // Wait for sync.
+  ASSERT_TRUE(AwaitQuiescence());
+
+  // Get foreign session data from all clients and check it against all
+  // client_windows.
+  for (int i = 0; i < num_clients(); ++i) {
+    ASSERT_TRUE(IsEncrypted(i));
+    ASSERT_TRUE(CheckForeignSessionsAgainst(i, client_windows));
+  }
+}