IndexedDB: Added MessageLoop to IndexedDBBackingStoreTest

content/browser/indexed_db/indexed_db_backing_store_unittest.cc

Index: content/browser/indexed_db/indexed_db_backing_store_unittest.cc
diff --git a/content/browser/indexed_db/indexed_db_backing_store_unittest.cc b/content/browser/indexed_db/indexed_db_backing_store_unittest.cc
index de685b8014e1f4613796c4767d39595550d24958..e0e3ad3bcd31db6a8d93d4b77d4c59f97b67e144 100644
--- a/content/browser/indexed_db/indexed_db_backing_store_unittest.cc
+++ b/content/browser/indexed_db/indexed_db_backing_store_unittest.cc
@@ -19,6 +19,7 @@
 #include "content/browser/indexed_db/indexed_db_value.h"
 #include "content/browser/indexed_db/leveldb/leveldb_factory.h"
 #include "content/public/test/mock_special_storage_policy.h"
+#include "content/public/test/test_browser_thread_bundle.h"
 #include "net/url_request/url_request_test_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/WebKit/public/platform/WebIDBTypes.h"
@@ -347,6 +348,8 @@ class IndexedDBBackingStoreTest : public testing::Test {
   std::vector<IndexedDBBlobInfo> m_blob_info;
 
  private:
+  content::TestBrowserThreadBundle thread_bundle_;
+
   DISALLOW_COPY_AND_ASSIGN(IndexedDBBackingStoreTest);
 };