Update from https://crrev.com/328418

base/threading/platform_thread.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // WARNING: You should *NOT* be using this class directly.  PlatformThread is
 // the low-level platform-specific abstraction to the OS's threading interface.
 // You should instead be using a message-loop driven Thread, see thread.h.
 
 #ifndef BASE_THREADING_PLATFORM_THREAD_H_
 #define BASE_THREADING_PLATFORM_THREAD_H_
@@ skipping 71 matching lines @@
       : handle_(handle),
         id_(0) {
   }
 
   PlatformThreadHandle(Handle handle,
                        PlatformThreadId id)
       : handle_(handle),
         id_(id) {
   }
 
+  PlatformThreadId id() const {
+    return id_;
+  }
+
   bool is_equal(const PlatformThreadHandle& other) const {
     return handle_ == other.handle_;
   }
 
   bool is_null() const {
     return !handle_;
   }
 
   Handle platform_handle() const {
     return handle_;
@@ skipping 47 matching lines @@
   // the current thread from another.
   static PlatformThreadHandle CurrentHandle();
 
   // Yield the current thread so another thread can be scheduled.
   static void YieldCurrentThread();
 
   // Sleeps for the specified duration.
   static void Sleep(base::TimeDelta duration);
 
   // Sets the thread name visible to debuggers/tools. This has no effect
-  // otherwise. This name pointer is not copied internally. Thus, it must stay
-  // valid until the thread ends.
-  static void SetName(const char* name);
+  // otherwise.
+  static void SetName(const std::string& name);
 
   // Gets the thread name, if previously set by SetName.
   static const char* GetName();
 
   // Creates a new thread.  The |stack_size| parameter can be 0 to indicate
   // that the default stack size should be used.  Upon success,
   // |*thread_handle| will be assigned a handle to the newly created thread,
   // and |delegate|'s ThreadMain method will be executed on the newly created
   // thread.
   // NOTE: When you are done with the thread handle, you must call Join to
@@ skipping 24 matching lines @@
 
   static ThreadPriority GetThreadPriority(PlatformThreadHandle handle);
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(PlatformThread);
 };
 
 }  // namespace base
 
 #endif  // BASE_THREADING_PLATFORM_THREAD_H_