Delete zoomed_viewport_offset_ and its users.

cc/layer_tree_host_impl.h

 // Copyright 2011 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 CC_LAYER_TREE_HOST_IMPL_H_
 #define CC_LAYER_TREE_HOST_IMPL_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/time.h"
@@ skipping 268 matching lines @@
 
 private:
     void animatePageScale(base::TimeTicks monotonicTime);
     void animateScrollbars(base::TimeTicks monotonicTime);
 
     void computeDoubleTapZoomDeltas(ScrollAndScaleSet* scrollInfo);
     void computePinchZoomDeltas(ScrollAndScaleSet* scrollInfo);
     void makeScrollAndScaleSet(ScrollAndScaleSet* scrollInfo, gfx::Vector2d scrollOffset, float pageScale);
 
     void setPageScaleDelta(float);
-    gfx::Vector2dF scrollPinchZoomViewport(gfx::Vector2dF delta);
     gfx::Vector2dF scrollLayerWithViewportSpaceDelta(LayerImpl* layerImpl, float scaleFromViewportToScreenSpace, gfx::PointF viewportPoint, gfx::Vector2dF viewportDelta);
 
     void updateMaxScrollOffset();
     void trackDamageForAllSurfaces(LayerImpl* rootDrawLayer, const LayerList& renderSurfaceLayerList);
 
     // Returns false if the frame should not be displayed. This function should
     // only be called from prepareToDraw, as didDrawAllLayers must be called
     // if this helper function is called.
     bool calculateRenderPasses(FrameData&);
     void animateLayersRecursive(LayerImpl*, base::TimeTicks monotonicTime, base::Time wallClockTime, AnimationEventsVector*, bool& didAnimate, bool& needsAnimateLayers);
@@ skipping 63 matching lines @@
     size_t m_lastSentMemoryUseBytes;
 
     scoped_ptr<AnimationRegistrar> m_animationRegistrar;
 
     DISALLOW_COPY_AND_ASSIGN(LayerTreeHostImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYER_TREE_HOST_IMPL_H_