Correctly update scroll offset animations in response to scroll anchoring

third_party/WebKit/Source/platform/animation/CompositorScrollOffsetAnimationCurve.h

 // 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.
 
 #ifndef CompositorScrollOffsetAnimationCurve_h
 #define CompositorScrollOffsetAnimationCurve_h
 
 #include "platform/PlatformExport.h"
 #include "platform/animation/CompositorAnimationCurve.h"
 #include "platform/geometry/FloatPoint.h"
@@ skipping 15 matching lines @@
     };
 
     CompositorScrollOffsetAnimationCurve(FloatPoint, ScrollDurationBehavior);
     CompositorScrollOffsetAnimationCurve(cc::ScrollOffsetAnimationCurve*);
     ~CompositorScrollOffsetAnimationCurve() override;
 
     virtual void setInitialValue(FloatPoint);
     virtual FloatPoint getValue(double time) const;
     virtual double duration() const;
     virtual FloatPoint targetValue() const;
+    virtual void applyAdjustment(IntSize);
     virtual void updateTarget(double time, FloatPoint newTarget);
 
     // CompositorAnimationCurve implementation.
     std::unique_ptr<cc::AnimationCurve> cloneToAnimationCurve() const override;
 
 private:
     std::unique_ptr<cc::ScrollOffsetAnimationCurve> m_curve;
 };
 
 } // namespace blink
 
 #endif // CompositorScrollOffsetAnimationCurve_h