Remove WebScroll*

sky/viewer/cc/web_animation_impl.cc

Index: sky/viewer/cc/web_animation_impl.cc
diff --git a/sky/viewer/cc/web_animation_impl.cc b/sky/viewer/cc/web_animation_impl.cc
index cd1f9d7e19cfb5148cf38c696c5a4edde83aaf99..d056b3bded85fc24b644bfef4820419eb433d45e 100644
--- a/sky/viewer/cc/web_animation_impl.cc
+++ b/sky/viewer/cc/web_animation_impl.cc
@@ -9,7 +9,6 @@
 #include "cc/animation/animation_id_provider.h"
 #include "sky/viewer/cc/web_filter_animation_curve_impl.h"
 #include "sky/viewer/cc/web_float_animation_curve_impl.h"
-#include "sky/viewer/cc/web_scroll_offset_animation_curve_impl.h"
 #include "sky/viewer/cc/web_transform_animation_curve_impl.h"
 #include "sky/engine/public/platform/WebCompositorAnimationCurve.h"
 
@@ -52,12 +51,6 @@ WebCompositorAnimationImpl::WebCompositorAnimationImpl(
       curve = filter_curve_impl->CloneToAnimationCurve();
       break;
     }
-    case WebCompositorAnimationCurve::AnimationCurveTypeScrollOffset: {
-      const WebScrollOffsetAnimationCurveImpl* scroll_curve_impl =
-          static_cast<const WebScrollOffsetAnimationCurveImpl*>(&web_curve);
-      curve = scroll_curve_impl->CloneToAnimationCurve();
-      break;
-    }
   }
   animation_ = Animation::Create(
       curve.Pass(),