Disk cache: Protect the code against misuse......

net/disk_cache/in_flight_io.cc

Index: net/disk_cache/in_flight_io.cc
===================================================================
--- net/disk_cache/in_flight_io.cc	(revision 52555)
+++ net/disk_cache/in_flight_io.cc	(working copy)
@@ -37,7 +37,7 @@
 // Runs on a background thread.
 void InFlightIO::OnIOComplete(BackgroundIO* operation) {
 #ifndef NDEBUG
-  if (callback_thread_ == MessageLoop::current()) {
+  if (callback_thread_->BelongsToCurrentThread()) {
     DCHECK(single_thread_ || !running_);
     single_thread_ = true;
   }
@@ -66,7 +66,7 @@
 
 // Runs on the primary thread.
 void InFlightIO::OnOperationPosted(BackgroundIO* operation) {
-  DCHECK(callback_thread_ == MessageLoop::current());
+  DCHECK(callback_thread_->BelongsToCurrentThread());
   io_list_.insert(operation);
 }