[Sync] - Upload the callstacks for errors so that the line number of error is in callstack.

chrome/browser/sync/profile_sync_service_bookmark_unittest.cc

 // Copyright (c) 2012 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.
 
 // TODO(akalin): This file is basically just a unit test for
 // BookmarkChangeProcessor.  Write unit tests for
 // BookmarkModelAssociator separately.
 
 #include <stack>
 #include <vector>
@@ skipping 342 matching lines @@
       model_->ClearStore();
     message_loop_.RunAllPending();
   }
 
   void StartSync() {
     // Set up model associator.
     model_associator_.reset(new TestBookmarkModelAssociator(
         profile_.GetBookmarkModel(),
         test_user_share_.user_share(),
         &mock_error_handler_));
-    SyncError error;
-    EXPECT_TRUE(model_associator_->AssociateModels(&error));
+    SyncError error = model_associator_->AssociateModels();
+    EXPECT_FALSE(error.IsSet());
     MessageLoop::current()->RunAllPending();
 
     // Set up change processor.
     change_processor_.reset(
         new BookmarkChangeProcessor(model_associator_.get(),
                                     &mock_error_handler_));
     change_processor_->Start(&profile_, test_user_share_.user_share());
   }
 
   void StopSync() {
     change_processor_->Stop();
     change_processor_.reset();
-    SyncError error;
-    EXPECT_TRUE(model_associator_->DisassociateModels(&error));
+    SyncError error = model_associator_->DisassociateModels();
+    EXPECT_FALSE(error.IsSet());
     model_associator_.reset();
 
     message_loop_.RunAllPending();
 
     // TODO(akalin): Actually close the database and flush it to disk
     // (and make StartSync reload from disk).  This would require
     // refactoring TestUserShare.
   }
 
   void UnloadBookmarkModel() {
@@ skipping 1097 matching lines @@
   EXPECT_EQ(1, observer.get_started());
   EXPECT_EQ(0, observer.get_completed_count_at_started());
   EXPECT_EQ(1, observer.get_completed());
 
   model_->RemoveObserver(&observer);
 }
 
 }  // namespace
 
 }  // namespace browser_sync