Transform RefCountedDeleteOnMessageLoop to RefCountedDeleteOnSequence.

components/webdata/common/web_database_backend.h

Index: components/webdata/common/web_database_backend.h
diff --git a/components/webdata/common/web_database_backend.h b/components/webdata/common/web_database_backend.h
index 42116fdd3a8a6f8eeb3f2fb3d202107ebd8be3c5..8c2df1a7ef236b75ba3b770b9b50488d22c14fdf 100644
--- a/components/webdata/common/web_database_backend.h
+++ b/components/webdata/common/web_database_backend.h
@@ -12,7 +12,7 @@
 #include "base/files/file_path.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
-#include "base/memory/ref_counted_delete_on_message_loop.h"
+#include "base/memory/ref_counted_delete_on_sequence.h"
 #include "base/memory/scoped_vector.h"
 #include "base/single_thread_task_runner.h"
 #include "components/webdata/common/web_database_service.h"
@@ -28,7 +28,7 @@ class WebDataRequestManager;
 // DB thread.
 
 class WEBDATA_EXPORT WebDatabaseBackend
-    : public base::RefCountedDeleteOnMessageLoop<WebDatabaseBackend> {
+    : public base::RefCountedDeleteOnSequence<WebDatabaseBackend> {
  public:
   class Delegate {
    public:
@@ -78,7 +78,7 @@ class WEBDATA_EXPORT WebDatabaseBackend
   WebDatabase* database() { return db_.get(); }
 
  protected:
-  friend class base::RefCountedDeleteOnMessageLoop<WebDatabaseBackend>;
+  friend class base::RefCountedDeleteOnSequence<WebDatabaseBackend>;
   friend class base::DeleteHelper<WebDatabaseBackend>;
 
   virtual ~WebDatabaseBackend();