Turn ThreadPriority enum into an enum class.

content/browser/browser_main_loop.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 "content/browser/browser_main_loop.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 1026 matching lines @@
 
 #if !defined(OS_IOS)
   HistogramSynchronizer::GetInstance();
 
 
   // GpuDataManager for in-process initialized in PreCreateThreads.
   bool initialize_gpu_data_manager = !UsingInProcessGpu();
 #if defined(OS_ANDROID)
   // Up the priority of anything that touches with display tasks
   // (this thread is UI thread, and io_thread_ is for IPCs).
-  io_thread_->SetPriority(base::kThreadPriority_Display);
-  base::PlatformThread::SetThreadPriority(
-      base::PlatformThread::CurrentHandle(),
-      base::kThreadPriority_Display);
+  io_thread_->SetPriority(base::ThreadPriority::DISPLAY);
+  base::PlatformThread::SetThreadPriority(base::PlatformThread::CurrentHandle(),
+                                          base::ThreadPriority::DISPLAY);
 
   // On Android, GLSurface::InitializeOneOff() must be called before
   // initalizing the GpuDataManagerImpl as it uses the GL bindings.
   // TODO(sievers): Shouldn't need to init full bindings to determine GL
   // version/vendor strings. crbug.com/326295
   if (initialize_gpu_data_manager) {
     // Note InitializeOneOff is not safe either for in-process gpu after
     // creating threads, since it may race with the gpu thread.
     if (!gfx::GLSurface::InitializeOneOff()) {
       LOG(FATAL) << "GLSurface::InitializeOneOff failed";
@@ skipping 213 matching lines @@
 
 void BrowserMainLoop::EndStartupTracing() {
   is_tracing_startup_ = false;
   TracingController::GetInstance()->DisableRecording(
       TracingController::CreateFileSink(
           startup_trace_file_,
           base::Bind(OnStoppedStartupTracing, startup_trace_file_)));
 }
 
 }  // namespace content