[scheduler] Add TaskQueue::Observer

third_party/WebKit/Source/platform/scheduler/renderer/budget_pool.h

 // Copyright 2017 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.
 
 #ifndef THIRD_PARTY_WEBKIT_SOURCE_PLATFORM_SCHEDULER_RENDERER_BUDGET_POOL_H_
 #define THIRD_PARTY_WEBKIT_SOURCE_PLATFORM_SCHEDULER_RENDERER_BUDGET_POOL_H_
 
 #include <unordered_set>
 
 #include "base/callback.h"
@@ skipping 98 matching lines @@
   // a very long period after a single long task.
   void SetMaxThrottlingDelay(
       base::TimeTicks now,
       base::Optional<base::TimeDelta> max_throttling_delay);
 
   // Set minimal budget level required to run a task. If budget pool was
   // exhausted, it needs to accumulate at least |min_budget_to_run| time units
   // to unblock and run tasks again. When unblocked, it still can run tasks
   // when budget is positive but less than this level until being blocked
   // until being blocked when budget reaches zero.
-  // This is needed for integration with WakeupBudgetPool to prevent a situation
-  // when wakeup happened but time budget pool allows only one task to run at
+  // This is needed for integration with WakeUpBudgetPool to prevent a situation
+  // when wake_up happened but time budget pool allows only one task to run at
   // the moment.
-  // It is recommended to use the same value for this and WakeupBudgetPool's
-  // wakeup window length.
+  // It is recommended to use the same value for this and WakeUpBudgetPool's
+  // wake_up window length.
   // NOTE: This does not have an immediate effect and does not call
   // BudgetPoolController::UnblockQueue.
   void SetMinBudgetLevelToRun(base::TimeTicks now,
                               base::TimeDelta min_budget_level_to_run);
 
   // Throttle task queues from this time budget pool if tasks are running
   // for more than |cpu_percentage| per cent of wall time.
   // This function does not affect internal time budget level.
   void SetTimeBudgetRecoveryRate(base::TimeTicks now, double cpu_percentage);
 
@@ skipping 47 matching lines @@
 
   base::Callback<void(base::TimeDelta)> reporting_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(CPUTimeBudgetPool);
 };
 
 }  // namespace scheduler
 }  // namespace blink
 
 #endif  // THIRD_PARTY_WEBKIT_SOURCE_PLATFORM_SCHEDULER_RENDERER_BUDGET_POOL_H_