Introduce BookmarkClient interface to abstract embedder

chrome/browser/sync/glue/bookmark_data_type_controller_unittest.cc

Index: chrome/browser/sync/glue/bookmark_data_type_controller_unittest.cc
diff --git a/chrome/browser/sync/glue/bookmark_data_type_controller_unittest.cc b/chrome/browser/sync/glue/bookmark_data_type_controller_unittest.cc
index 73babc4d99342c109231b4ec97e8977dfe394464..93d200e272b7f578b1229b0a7b0c5d87ba1d8afe 100644
--- a/chrome/browser/sync/glue/bookmark_data_type_controller_unittest.cc
+++ b/chrome/browser/sync/glue/bookmark_data_type_controller_unittest.cc
@@ -57,7 +57,9 @@ class HistoryMock : public HistoryService {
 KeyedService* BuildBookmarkModel(content::BrowserContext* context) {
   Profile* profile = static_cast<Profile*>(context);
   BookmarkModel* bookmark_model = new BookmarkModel(profile);
-  bookmark_model->Load(profile->GetIOTaskRunner());
+  bookmark_model->Load(profile->GetIOTaskRunner(),
+                       content::BrowserThread::GetMessageLoopProxyForThread(
+                           content::BrowserThread::UI));
   return bookmark_model;
 }
 
@@ -180,7 +182,9 @@ TEST_F(SyncBookmarkDataTypeControllerTest, StartBookmarkModelNotReady) {
                  base::Unretained(&model_load_callback_)));
   EXPECT_EQ(DataTypeController::MODEL_STARTING, bookmark_dtc_->state());
 
-  bookmark_model_->Load(profile_.GetIOTaskRunner());
+  bookmark_model_->Load(profile_.GetIOTaskRunner(),
+                        content::BrowserThread::GetMessageLoopProxyForThread(
+                            content::BrowserThread::UI));
   test::WaitForBookmarkModelToLoad(bookmark_model_);
   EXPECT_EQ(DataTypeController::MODEL_LOADED, bookmark_dtc_->state());