Delete unused AnimatableValue code

third_party/WebKit/Source/core/animation/animatable/AnimatableDoubleAndBool.h

Index: third_party/WebKit/Source/core/animation/animatable/AnimatableDoubleAndBool.h
diff --git a/third_party/WebKit/Source/core/animation/animatable/AnimatableDoubleAndBool.h b/third_party/WebKit/Source/core/animation/animatable/AnimatableDoubleAndBool.h
index ebaea5d0e79cc3be54bc514c927dcbb474d3c457..5f038ef1a4fe58c41aea0c55f1d498744a5a1cc9 100644
--- a/third_party/WebKit/Source/core/animation/animatable/AnimatableDoubleAndBool.h
+++ b/third_party/WebKit/Source/core/animation/animatable/AnimatableDoubleAndBool.h
@@ -10,21 +10,13 @@
 
 namespace blink {
 
-class CORE_EXPORT AnimatableDoubleAndBool final : public AnimatableValue {
+class AnimatableDoubleAndBool final : public AnimatableValue {
  public:
   ~AnimatableDoubleAndBool() override {}
   static PassRefPtr<AnimatableDoubleAndBool> create(double number, bool flag) {
     return adoptRef(new AnimatableDoubleAndBool(number, flag));
   }
 
-  double toDouble() const { return m_number; }
-  bool flag() const { return m_flag; }
-
- protected:
-  PassRefPtr<AnimatableValue> interpolateTo(const AnimatableValue*,
-                                            double fraction) const override;
-  bool usesDefaultInterpolationWith(const AnimatableValue*) const override;
-
  private:
   AnimatableDoubleAndBool(double number, bool flag)
       : m_number(number), m_flag(flag) {}