scheduler: Reset gesture state at start of a mouse drag

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

 // Copyright 2014 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_RENDERER_SCHEDULER_IMPL_H_
 #define THIRD_PARTY_WEBKIT_SOURCE_PLATFORM_SCHEDULER_RENDERER_RENDERER_SCHEDULER_IMPL_H_
 
 #include "base/atomicops.h"
 #include "base/macros.h"
 #include "base/synchronization/lock.h"
@@ skipping 247 matching lines @@
   static const int kEndIdleWhenHiddenDelayMillis = 10000;
 
   // The amount of time for which loading tasks will be prioritized over
   // other tasks during the initial page load.
   static const int kRailsInitialLoadingPrioritizationMillis = 1000;
 
   // The amount of time in milliseconds we have to respond to user input as
   // defined by RAILS.
   static const int kRailsResponseTimeMillis = 50;
 
-  // For the purposes of deciding whether or not it's safe to turn timers and
-  // loading tasks on only in idle periods, we regard the system as being as
-  // being "idle period" starved if there hasn't been an idle period in the last
-  // 10 seconds. This was chosen to be long enough to cover most anticipated
-  // user gestures.
-  static const int kIdlePeriodStarvationThresholdMillis = 10000;
-
   // The amount of time to wait before suspending shared timers after the
   // renderer has been backgrounded. This is used only if background suspension
   // of shared timers is enabled.
   static const int kSuspendTimersWhenBackgroundedDelayMillis = 5 * 60 * 1000;
 
   // The time we should stay in a priority-escalated mode after a call to
   // DidAnimateForInputOnCompositorThread().
   static const int kFlingEscalationLimitMillis = 100;
 
   // Schedules an immediate PolicyUpdate, if there isn't one already pending and
@@ skipping 28 matching lines @@
   // scheduled. Must be called with |any_thread_lock_| held. Can be called from
   // any thread.
   UseCase ComputeCurrentUseCase(
       base::TimeTicks now,
       base::TimeDelta* expected_use_case_duration) const;
 
   // An input event of some sort happened, the policy may need updating.
   void UpdateForInputEventOnCompositorThread(WebInputEvent::Type type,
                                              InputEventState input_event_state);
 
-  // Returns true if there has been at least one idle period in the last
-  // |kIdlePeriodStarvationThresholdMillis|.
-  bool HadAnIdlePeriodRecently(base::TimeTicks now) const;
-
   // Helpers for safely suspending/resuming the timer queue after a
   // background/foreground signal.
   void SuspendTimerQueueWhenBackgrounded();
   void ResumeTimerQueueWhenForegrounded();
 
   // The task cost estimators and the UserModel need to be reset upon page
   // nagigation. This function does that. Must be called from the main thread.
   void ResetForNavigationLocked();
 
   // Estimates the maximum task length that won't cause a jank based on the
@@ skipping 141 matching lines @@
   PollableThreadSafeFlag policy_may_need_update_;
   base::WeakPtrFactory<RendererSchedulerImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RendererSchedulerImpl);
 };
 
 }  // namespace scheduler
 }  // namespace blink
 
 #endif  // THIRD_PARTY_WEBKIT_SOURCE_PLATFORM_SCHEDULER_RENDERER_RENDERER_SCHEDULER_IMPL_H_