Update from https://crrev.com/327068

base/threading/platform_thread_android.cc

 // 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.
 
 #include "base/threading/platform_thread.h"
 
 #include <errno.h>
 #include <sys/prctl.h>
 #include <sys/resource.h>
 #include <sys/types.h>
@@ skipping 20 matching lines @@
 //   Process.THREAD_PRIORITY_DISPLAY = -4;
 //   Process.THREAD_PRIORITY_FOREGROUND = -2;
 //   Process.THREAD_PRIORITY_LESS_FAVORABLE = 1;
 //   Process.THREAD_PRIORITY_LOWEST = 19;
 //   Process.THREAD_PRIORITY_MORE_FAVORABLE = -1;
 //   Process.THREAD_PRIORITY_URGENT_AUDIO = -19;
 //   Process.THREAD_PRIORITY_URGENT_DISPLAY = -8;
 // We use -6 for display, but we may want to split this into urgent (-8) and
 // non-urgent (-4).
 const ThreadPriorityToNiceValuePair kThreadPriorityToNiceValueMap[4] = {
-    {kThreadPriority_RealtimeAudio, -16},
-    {kThreadPriority_Background, 10},
-    {kThreadPriority_Normal, 0},
-    {kThreadPriority_Display, -6},
+    {ThreadPriority::BACKGROUND, 10},
+    {ThreadPriority::NORMAL, 0},
+    {ThreadPriority::DISPLAY, -6},
+    {ThreadPriority::REALTIME_AUDIO, -16},
 };
 
-bool HandleSetThreadPriorityForPlatform(PlatformThreadHandle handle,
-                                        ThreadPriority priority) {
+bool SetThreadPriorityForPlatform(PlatformThreadHandle handle,
+                                  ThreadPriority priority) {
   // On Android, we set the Audio priority through JNI as Audio priority
   // will also allow the process to run while it is backgrounded.
-  if (priority == kThreadPriority_RealtimeAudio) {
+  if (priority == ThreadPriority::REALTIME_AUDIO) {
     JNIEnv* env = base::android::AttachCurrentThread();
     Java_ThreadUtils_setThreadPriorityAudio(env, PlatformThread::CurrentId());
     return true;
   }
   return false;
 }
 
+bool GetThreadPriorityForPlatform(PlatformThreadHandle handle,
+                                  ThreadPriority* priority) {
+  NOTIMPLEMENTED();
+  return false;
+}
+
 }  // namespace internal
 
 void PlatformThread::SetName(const char* name) {
   ThreadIdNameManager::GetInstance()->SetName(CurrentId(), name);
   tracked_objects::ThreadData::InitializeThreadContext(name);
 
   // Like linux, on android we can get the thread names to show up in the
   // debugger by setting the process name for the LWP.
   // We don't want to do this for the main thread because that would rename
   // the process, causing tools like killall to stop working.
   if (PlatformThread::CurrentId() == getpid())
     return;
 
   // Set the name for the LWP (which gets truncated to 15 characters).
   int err = prctl(PR_SET_NAME, name);
   if (err < 0 && errno != EPERM)
     DPLOG(ERROR) << "prctl(PR_SET_NAME)";
 }
 
 
 void InitThreading() {
 }
 
 void InitOnThread() {
   // Threads on linux/android may inherit their priority from the thread
   // where they were created. This sets all new threads to the default.
   PlatformThread::SetThreadPriority(PlatformThread::CurrentHandle(),
-                                    kThreadPriority_Normal);
+                                    ThreadPriority::NORMAL);
 }
 
 void TerminateOnThread() {
   base::android::DetachFromVM();
 }
 
 size_t GetDefaultThreadStackSize(const pthread_attr_t& attributes) {
 #if !defined(ADDRESS_SANITIZER)
   return 0;
 #else
   // AddressSanitizer bloats the stack approximately 2x. Default stack size of
   // 1Mb is not enough for some tests (see http://crbug.com/263749 for example).
   return 2 * (1 << 20);  // 2Mb
 #endif
 }
 
 bool RegisterThreadUtils(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace base