Introduce BookmarkClient interface to abstract embedder

chrome/test/base/testing_profile.cc

Index: chrome/test/base/testing_profile.cc
diff --git a/chrome/test/base/testing_profile.cc b/chrome/test/base/testing_profile.cc
index 9d53560c57ad8b041693f9f147d935d116971a2d..a881fefd2fec9e7e46ffc40540914dd0707d9a02 100644
--- a/chrome/test/base/testing_profile.cc
+++ b/chrome/test/base/testing_profile.cc
@@ -494,9 +494,14 @@ void TestingProfile::DestroyTopSites() {
 
 static KeyedService* BuildBookmarkModel(content::BrowserContext* context) {
   Profile* profile = static_cast<Profile*>(context);
-  BookmarkModel* bookmark_model = new BookmarkModel(profile);
-  bookmark_model->Load(profile->GetIOTaskRunner());
-  return bookmark_model;
+  ChromeBookmarkClient* bookmark_client = new ChromeBookmarkClient(profile);
+  bookmark_client->model()->Load(
+      profile->GetPrefs(),
+      profile->GetPath(),
+      profile->GetIOTaskRunner(),
+      content::BrowserThread::GetMessageLoopProxyForThread(
+          content::BrowserThread::UI));
+  return bookmark_client;
 }
 
 void TestingProfile::CreateBookmarkModel(bool delete_file) {
@@ -505,13 +510,14 @@ void TestingProfile::CreateBookmarkModel(bool delete_file) {
     base::DeleteFile(path, false);
   }
   // This will create a bookmark model.
-  BookmarkModel* bookmark_service = static_cast<BookmarkModel*>(
+  ChromeBookmarkClient* bookmark_client = static_cast<ChromeBookmarkClient*>(
       BookmarkModelFactory::GetInstance()->SetTestingFactoryAndUse(
           this, BuildBookmarkModel));
 
   HistoryService* history_service =
       HistoryServiceFactory::GetForProfileWithoutCreating(this);
   if (history_service) {
+    BookmarkService* bookmark_service = bookmark_client->model();
     history_service->history_backend_->bookmark_service_ = bookmark_service;
     history_service->history_backend_->expirer_.bookmark_service_ =
         bookmark_service;