Implementation of PostTaskAndReply() in MessageLoopProxy and BrowserThread.

base/message_loop_proxy.cc

Index: base/message_loop_proxy.cc
diff --git a/base/message_loop_proxy.cc b/base/message_loop_proxy.cc
index a38db393f6e4aa63412455d435804b608f86c682..bff6f320aa51e10f27182862cf4e02bf2f6e3b97 100644
--- a/base/message_loop_proxy.cc
+++ b/base/message_loop_proxy.cc
@@ -4,6 +4,8 @@
 
 #include "base/message_loop_proxy.h"
 
+#include "base/bind.h"
+
 namespace base {
 
 MessageLoopProxy::MessageLoopProxy() {
@@ -12,6 +14,16 @@ MessageLoopProxy::MessageLoopProxy() {
 MessageLoopProxy::~MessageLoopProxy() {
 }
 
+bool MessageLoopProxy::PostTaskAndReply(
+    const tracked_objects::Location& from_here,
+    const Closure& task,
+    const Closure& reply) {
+  internal::PostTaskAndReplyRelay* relay =
+      new internal::PostTaskAndReplyRelay(from_here, task, reply);
+  return PostTask(from_here, base::Bind(&internal::PostTaskAndReplyRelay::Run,
+                                        base::Unretained(relay)));
+}
+
 void MessageLoopProxy::OnDestruct() const {
   delete this;
 }