Remove old Sleep and PostDelayedTask interfaces that use int ms instead of TimeDelta.

remoting/base/plugin_message_loop_proxy.h

Index: remoting/base/plugin_message_loop_proxy.h
diff --git a/remoting/base/plugin_message_loop_proxy.h b/remoting/base/plugin_message_loop_proxy.h
index 23e2c7a8a0fb6c7ba904ddb2bb557476ec3738e8..1088344fd8e307c1f40d16a7aafe17c70e4b2dd7 100644
--- a/remoting/base/plugin_message_loop_proxy.h
+++ b/remoting/base/plugin_message_loop_proxy.h
@@ -34,18 +34,10 @@ class PluginMessageLoopProxy : public base::MessageLoopProxy {
   virtual bool PostDelayedTask(
       const tracked_objects::Location& from_here,
       const base::Closure& task,
-      int64 delay_ms) OVERRIDE;
-  virtual bool PostDelayedTask(
-      const tracked_objects::Location& from_here,
-      const base::Closure& task,
       base::TimeDelta delay) OVERRIDE;
   virtual bool PostNonNestableDelayedTask(
       const tracked_objects::Location& from_here,
       const base::Closure& task,
-      int64 delay_ms) OVERRIDE;
-  virtual bool PostNonNestableDelayedTask(
-      const tracked_objects::Location& from_here,
-      const base::Closure& task,
       base::TimeDelta delay) OVERRIDE;
 
   virtual bool RunsTasksOnCurrentThread() const OVERRIDE;