cc: Move TryScroll from LayerImpl to LayerTreeHostImpl

cc/layers/layer_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_LAYERS_LAYER_IMPL_H_
 #define CC_LAYERS_LAYER_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 513 matching lines @@
     return non_fast_scrollable_region_;
   }
 
   void SetTouchEventHandlerRegion(const Region& region) {
     touch_event_handler_region_ = region;
   }
   const Region& touch_event_handler_region() const {
     return touch_event_handler_region_;
   }
 
-  InputHandler::ScrollStatus TryScroll(
-      const gfx::PointF& screen_space_point,
-      InputHandler::ScrollInputType type) const;
-
   void SetDoubleSided(bool double_sided);
   bool double_sided() const { return double_sided_; }
 
   void SetTransform(const gfx::Transform& transform);
   const gfx::Transform& transform() const { return transform_; }
   bool TransformIsAnimating() const;
   bool HasPotentiallyRunningTransformAnimation() const;
   bool TransformIsAnimatingOnImplOnly() const;
   bool HasOnlyTranslationTransforms() const;
   bool AnimationsPreserveAxisAlignment() const;
@@ skipping 339 matching lines @@
   // If true, the layer or one of its descendants has a touch handler.
   bool layer_or_descendant_has_touch_handler_;
   bool sorted_for_recursion_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_LAYER_IMPL_H_