[scheduler] CPUTimeBudgetPool: Require a minimal level of budget to run

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

 // Copyright 2015 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_TASK_QUEUE_THROTTLER_H_
 #define THIRD_PARTY_WEBKIT_SOURCE_PLATFORM_SCHEDULER_RENDERER_TASK_QUEUE_THROTTLER_H_
 
 #include <set>
 #include <unordered_map>
 
@@ skipping 113 matching lines @@
   void EnableThrottling();
 
   const ThrottledTimeDomain* time_domain() const { return time_domain_.get(); }
 
   static base::TimeTicks AlignedThrottledRunTime(
       base::TimeTicks unthrottled_runtime);
 
   const scoped_refptr<TaskQueue>& task_runner() const { return task_runner_; }
 
   // Returned object is owned by |TaskQueueThrottler|.
-  CPUTimeBudgetPool* CreateCPUTimeBudgetPool(
-      const char* name,
-      base::Optional<base::TimeDelta> max_budget_level,
-      base::Optional<base::TimeDelta> max_throttling_duration);
+  CPUTimeBudgetPool* CreateCPUTimeBudgetPool(const char* name);
 
   // Accounts for given task for cpu-based throttling needs.
   void OnTaskRunTimeReported(TaskQueue* task_queue,
                              base::TimeTicks start_time,
                              base::TimeTicks end_time);
 
   void AsValueInto(base::trace_event::TracedValue* state,
                    base::TimeTicks now) const;
  private:
   struct Metadata {
@@ skipping 42 matching lines @@
 
   base::WeakPtrFactory<TaskQueueThrottler> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(TaskQueueThrottler);
 };
 
 }  // namespace scheduler
 }  // namespace blink
 
 #endif  // THIRD_PARTY_WEBKIT_SOURCE_PLATFORM_SCHEDULER_RENDERER_TASK_QUEUE_THROTTLER_H_