Update //base to chromium 9659b08ea5a34f889dc4166217f438095ddc10d2

base/threading/thread.h

Index: base/threading/thread.h
diff --git a/base/threading/thread.h b/base/threading/thread.h
index 0bd5d12922f1395bf3a93f99af6207fe27bdd2a4..5126491b3861cdb60f23eec1b40b11466d27a33a 100644
--- a/base/threading/thread.h
+++ b/base/threading/thread.h
@@ -155,25 +155,13 @@ class BASE_EXPORT Thread : PlatformThread::Delegate {
   //
   MessageLoop* message_loop() const { return message_loop_; }
 
-  // Returns a MessageLoopProxy for this thread. Use the MessageLoopProxy's
-  // PostTask methods to execute code on the thread. Returns NULL if the thread
-  // is not running (e.g. before Start or after Stop have been called). Callers
-  // can hold on to this even after the thread is gone; in this situation,
-  // attempts to PostTask() will fail.
-  //
-  // Note: This method is deprecated. Callers should call task_runner() instead
-  // and use the TaskRunner interfaces for safely interfacing with the Thread.
-  scoped_refptr<MessageLoopProxy> message_loop_proxy() const {
-    return message_loop_ ? message_loop_->message_loop_proxy() : NULL;
-  }
-
   // Returns a TaskRunner for this thread. Use the TaskRunner's PostTask
   // methods to execute code on the thread. Returns NULL if the thread is not
   // running (e.g. before Start or after Stop have been called). Callers can
   // hold on to this even after the thread is gone; in this situation, attempts
   // to PostTask() will fail.
   scoped_refptr<SingleThreadTaskRunner> task_runner() const {
-    return message_loop_->task_runner();
+    return message_loop_ ? message_loop_->task_runner() : nullptr;
   }
 
   // Returns the name of this thread (for display in debugger too).
@@ -188,9 +176,6 @@ class BASE_EXPORT Thread : PlatformThread::Delegate {
   // Returns true if the thread has been started, and not yet stopped.
   bool IsRunning() const;
 
-  // Sets the thread priority. The thread must already be started.
-  void SetPriority(ThreadPriority priority);
-
  protected:
   // Called just prior to starting the message loop
   virtual void Init() {}