[storage] Replace MessageLoopProxy usage with ThreadTaskRunnerHandle

storage/common/database/database_connections.cc

Index: storage/common/database/database_connections.cc
diff --git a/storage/common/database/database_connections.cc b/storage/common/database/database_connections.cc
index adfcde1ab0859e4698c9c0c742f7a0dd3016eb44..b0b55de57eb7c973570746b58c564fe13201f6b7 100644
--- a/storage/common/database/database_connections.cc
+++ b/storage/common/database/database_connections.cc
@@ -8,7 +8,7 @@
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
-#include "base/message_loop/message_loop_proxy.h"
+#include "base/thread_task_runner_handle.h"
 
 namespace storage {
 
@@ -123,7 +123,7 @@ bool DatabaseConnections::RemoveConnectionsHelper(
 
 DatabaseConnectionsWrapper::DatabaseConnectionsWrapper()
     : waiting_for_dbs_to_close_(false),
-      main_thread_(base::MessageLoopProxy::current()) {
+      main_thread_(base::ThreadTaskRunnerHandle::Get()) {
 }
 
 DatabaseConnectionsWrapper::~DatabaseConnectionsWrapper() {