Remove zoom() and effectiveZoom().

sky/engine/core/animation/animatable/AnimatableLength.h

Index: sky/engine/core/animation/animatable/AnimatableLength.h
diff --git a/sky/engine/core/animation/animatable/AnimatableLength.h b/sky/engine/core/animation/animatable/AnimatableLength.h
index ddc9981e50080451a9bd4f35e5766bd4c36dc7c8..827dd40a436c7af1602d143b45ea1e570452a0e8 100644
--- a/sky/engine/core/animation/animatable/AnimatableLength.h
+++ b/sky/engine/core/animation/animatable/AnimatableLength.h
@@ -38,11 +38,11 @@ namespace blink {
 
 class AnimatableLength final : public AnimatableValue {
 public:
-    static PassRefPtr<AnimatableLength> create(const Length& length, float zoom)
+    static PassRefPtr<AnimatableLength> create(const Length& length)
     {
-        return adoptRef(new AnimatableLength(length, zoom));
+        return adoptRef(new AnimatableLength(length));
     }
-    Length length(float zoom, ValueRange) const;
+    Length length(ValueRange) const;
 
 protected:
     virtual PassRefPtr<AnimatableValue> interpolateTo(const AnimatableValue*, double fraction) const override;
@@ -52,7 +52,7 @@ private:
     {
         return adoptRef(new AnimatableLength(pixels, percent, hasPixels, hasPercent));
     }
-    AnimatableLength(const Length&, float zoom);
+    AnimatableLength(const Length&);
     AnimatableLength(double pixels, double percent, bool hasPixels, bool hasPercent)
         : m_pixels(pixels)
         , m_percent(percent)