Add BrowserThread::PostTaskOnIOThread

content/public/browser/browser_thread.h

Index: content/public/browser/browser_thread.h
diff --git a/content/public/browser/browser_thread.h b/content/public/browser/browser_thread.h
index 743bec6e550a829b0686297db9b410d465d3499c..218527da8bf17850966a226b524a4e88eedd47b4 100644
--- a/content/public/browser/browser_thread.h
+++ b/content/public/browser/browser_thread.h
@@ -116,6 +116,11 @@ class CONTENT_EXPORT BrowserThread {
       const base::Closure& task,
       int64 delay_ms);
 
+  // Posts a task on the IO thread. Syntactic sugar for
+  // PostTask(BrowserThread::IO, ...).
+  static bool PostTaskOnIOThread(const tracked_objects::Location& from_here,
+                                 const base::Closure& task);
+
   // TODO(brettw) remove these when Task->Closure conversion is done.
   static bool PostTask(ID identifier,
                        const tracked_objects::Location& from_here,