Update from https://crrev.com/328418

base/threading/platform_thread.h

Index: base/threading/platform_thread.h
diff --git a/base/threading/platform_thread.h b/base/threading/platform_thread.h
index 653961ddfae05b34ddbf3def5fbe91f20e523c51..69a2b0d63895d84a09460f585db7439414f730cb 100644
--- a/base/threading/platform_thread.h
+++ b/base/threading/platform_thread.h
@@ -89,6 +89,10 @@ class PlatformThreadHandle {
         id_(id) {
   }
 
+  PlatformThreadId id() const {
+    return id_;
+  }
+
   bool is_equal(const PlatformThreadHandle& other) const {
     return handle_ == other.handle_;
   }
@@ -156,9 +160,8 @@ class BASE_EXPORT PlatformThread {
   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();