Add functions to expand PostDelayedTask interface.

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 f35ec00a7b1b6bd4eefde32911c6cbe736afa2b6..61b377d3ad86245a09647bf6f3e7141a40af2f36 100644
--- a/content/public/browser/browser_thread.h
+++ b/content/public/browser/browser_thread.h
@@ -107,6 +107,10 @@ class CONTENT_EXPORT BrowserThread {
                               const tracked_objects::Location& from_here,
                               const base::Closure& task,
                               int64 delay_ms);
+  static bool PostDelayedTask(ID identifier,
+                              const tracked_objects::Location& from_here,
+                              const base::Closure& task,
+                              base::TimeDelta delay);
   static bool PostNonNestableTask(ID identifier,
                                   const tracked_objects::Location& from_here,
                                   const base::Closure& task);
@@ -115,6 +119,11 @@ class CONTENT_EXPORT BrowserThread {
       const tracked_objects::Location& from_here,
       const base::Closure& task,
       int64 delay_ms);
+  static bool PostNonNestableDelayedTask(
+      ID identifier,
+      const tracked_objects::Location& from_here,
+      const base::Closure& task,
+      base::TimeDelta delay);
 
   static bool PostTaskAndReply(
       ID identifier,