Implementation of PostTaskAndReply() in MessageLoopProxy and BrowserThread.

content/browser/browser_thread.cc

Index: content/browser/browser_thread.cc
diff --git a/content/browser/browser_thread.cc b/content/browser/browser_thread.cc
index b4d95ce32f93f4c71be291cb1bd697abc90eb2f7..c3b400540e8d8897a68ea7cccccd4340f4b65908 100644
--- a/content/browser/browser_thread.cc
+++ b/content/browser/browser_thread.cc
@@ -4,6 +4,7 @@
 
 #include "content/browser/browser_thread.h"
 
+#include "base/bind.h"
 #include "base/message_loop.h"
 #include "base/message_loop_proxy.h"
 #include "base/threading/thread_restrictions.h"
@@ -221,6 +222,17 @@ bool BrowserThread::PostNonNestableDelayedTask(
 }
 
 // static
+bool BrowserThread::PostTaskAndReply(
+    ID identifier,
+    const tracked_objects::Location& from_here,
+    const base::Closure& task,
+    const base::Closure& reply) {
+  return GetMessageLoopProxyForThread(identifier)->PostTaskAndReply(from_here,
+                                                                    task,
+                                                                    reply);
+}
+
+// static
 bool BrowserThread::GetCurrentThreadIdentifier(ID* identifier) {
   // We shouldn't use MessageLoop::current() since it uses LazyInstance which
   // may be deleted by ~AtExitManager when a WorkerPool thread calls this