Make the lazy TLS pointer to the current MessageLoop into a Leaky LazyInstance.

base/message_loop/message_loop.cc

Index: base/message_loop/message_loop.cc
diff --git a/base/message_loop/message_loop.cc b/base/message_loop/message_loop.cc
index 826c7573ee60e942fd0fb1beac5dff327d7a907c..94401e0f97d264e70786221ae2850cbd629a60ce 100644
--- a/base/message_loop/message_loop.cc
+++ b/base/message_loop/message_loop.cc
@@ -44,7 +44,7 @@ namespace {
 
 // A lazily created thread local storage for quick access to a thread's message
 // loop, if one exists.  This should be safe and free of static constructors.
-LazyInstance<base::ThreadLocalPointer<MessageLoop> > lazy_tls_ptr =
+LazyInstance<base::ThreadLocalPointer<MessageLoop> >::Leaky lazy_tls_ptr =
     LAZY_INSTANCE_INITIALIZER;
 
 // Logical events for Histogram profiling. Run with -message-loop-histogrammer