Rename *FileIO TaskScheduler worker pools to *Blocking.

components/task_scheduler_util/browser/initialization.cc

 // Copyright 2016 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 "components/task_scheduler_util/browser/initialization.h"
 
 #include <map>
 #include <string>
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/task_scheduler/scheduler_worker_params.h"
 #include "base/task_scheduler/switches.h"
 #include "base/task_scheduler/task_traits.h"
 #include "base/threading/platform_thread.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "components/task_scheduler_util/common/variations_util.h"
 #include "components/variations/variations_associated_data.h"
 
 namespace task_scheduler_util {
 
 namespace {
 
 constexpr char kFieldTrialName[] = "BrowserScheduler";
 
 enum WorkerPoolType : size_t {
   BACKGROUND = 0,
-  BACKGROUND_FILE_IO,
+  BACKGROUND_BLOCKING,
   FOREGROUND,
-  FOREGROUND_FILE_IO,
+  FOREGROUND_BLOCKING,
   WORKER_POOL_COUNT  // Always last.
 };
 
 }  // namespace
 
 std::vector<base::SchedulerWorkerPoolParams>
 GetBrowserWorkerPoolParamsFromVariations() {
   using ThreadPriority = base::ThreadPriority;
 
   std::map<std::string, std::string> variation_params;
   if (!::variations::GetVariationParams(kFieldTrialName, &variation_params))
     return std::vector<base::SchedulerWorkerPoolParams>();
 
   std::vector<SchedulerImmutableWorkerPoolParams> immutable_worker_pool_params;
   DCHECK_EQ(BACKGROUND, immutable_worker_pool_params.size());
   immutable_worker_pool_params.emplace_back("Background",
                                             ThreadPriority::BACKGROUND);
-  DCHECK_EQ(BACKGROUND_FILE_IO, immutable_worker_pool_params.size());
-  immutable_worker_pool_params.emplace_back("BackgroundFileIO",
+  DCHECK_EQ(BACKGROUND_BLOCKING, immutable_worker_pool_params.size());
+  immutable_worker_pool_params.emplace_back("BackgroundBlocking",
                                             ThreadPriority::BACKGROUND);
   DCHECK_EQ(FOREGROUND, immutable_worker_pool_params.size());
   immutable_worker_pool_params.emplace_back("Foreground",
                                             ThreadPriority::NORMAL);
   // Tasks posted to SequencedWorkerPool or BrowserThreadImpl may be redirected
   // to this pool. Since COM STA is initialized in these environments, it must
   // also be initialized in this pool.
-  DCHECK_EQ(FOREGROUND_FILE_IO, immutable_worker_pool_params.size());
+  DCHECK_EQ(FOREGROUND_BLOCKING, immutable_worker_pool_params.size());
   immutable_worker_pool_params.emplace_back(
-      "ForegroundFileIO", ThreadPriority::NORMAL,
+      "ForegroundBlocking", ThreadPriority::NORMAL,
       base::SchedulerBackwardCompatibility::INIT_COM_STA);
 
   return GetWorkerPoolParams(immutable_worker_pool_params, variation_params);
 }
 
 size_t BrowserWorkerPoolIndexForTraits(const base::TaskTraits& traits) {
   const bool is_background =
       traits.priority() == base::TaskPriority::BACKGROUND;
   if (traits.may_block() || traits.with_base_sync_primitives())
-    return is_background ? BACKGROUND_FILE_IO : FOREGROUND_FILE_IO;
+    return is_background ? BACKGROUND_BLOCKING : FOREGROUND_BLOCKING;
   return is_background ? BACKGROUND : FOREGROUND;
 }
 
 void MaybePerformBrowserTaskSchedulerRedirection() {
   // TODO(gab): Remove this when http://crbug.com/622400 concludes.
   if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kDisableBrowserTaskScheduler) &&
       variations::GetVariationParamValue(
           kFieldTrialName, "RedirectSequencedWorkerPools") == "true") {
     const base::TaskPriority max_task_priority =
         variations::GetVariationParamValue(
             kFieldTrialName, "CapSequencedWorkerPoolsAtUserVisible") == "true"
             ? base::TaskPriority::USER_VISIBLE
             : base::TaskPriority::HIGHEST;
     base::SequencedWorkerPool::EnableWithRedirectionToTaskSchedulerForProcess(
         max_task_priority);
   }
 }
 
 }  // namespace task_scheduler_util