[Sync] Move change-related methods out of SyncManager::Observer

chrome/browser/sync/js/js_sync_manager_observer_unittest.cc

Index: chrome/browser/sync/js/js_sync_manager_observer_unittest.cc
diff --git a/chrome/browser/sync/js/js_sync_manager_observer_unittest.cc b/chrome/browser/sync/js/js_sync_manager_observer_unittest.cc
index 5c33a5f9ada848728b76a9a4b8e03f6eee0363ab..026a41c53a5ea19a44edb30ff2c89b71ddc00ac8 100644
--- a/chrome/browser/sync/js/js_sync_manager_observer_unittest.cc
+++ b/chrome/browser/sync/js/js_sync_manager_observer_unittest.cc
@@ -20,6 +20,7 @@
 #include "chrome/browser/sync/protocol/sync_protocol_error.h"
 #include "chrome/browser/sync/sessions/session_state.h"
 #include "chrome/browser/sync/syncable/model_type.h"
+#include "chrome/browser/sync/syncable/syncable.h"
 #include "chrome/browser/sync/test/engine/test_user_share.h"
 #include "chrome/browser/sync/util/weak_handle.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ -332,7 +333,8 @@ TEST_F(JsSyncManagerObserverTest, OnChangesApplied) {
     expected_details.Set("changes", expected_changes);
     for (int j = i; j < syncable::MODEL_TYPE_COUNT; ++j) {
       sync_api::ReadTransaction trans(FROM_HERE, test_user_share.user_share());
-      expected_changes->Append(changes[j].ToValue(&trans));
+      expected_changes->Append(changes[j].ToValue(
+          syncable::ImmutableEntryKernelMutationMap()));
     }
     EXPECT_CALL(mock_js_event_handler_,
                 HandleJsEvent("onChangesApplied",
@@ -347,7 +349,7 @@ TEST_F(JsSyncManagerObserverTest, OnChangesApplied) {
         local_changes(changes + i, changes + arraysize(changes));
     js_sync_manager_observer_.OnChangesApplied(
         syncable::ModelTypeFromInt(i),
-        &trans,
+        syncable::ImmutableEntryKernelMutationMap(),
         sync_api::ImmutableChangeRecordList(&local_changes));
   }