Blink Compositor Animation: Make Animation and Curve methods non-virtual.

third_party/WebKit/Source/core/core.gypi

 {
     'includes': [
         'core_generated.gypi',
     ],
     'variables': {
         # Files for which bindings (.cpp and .h files) will be generated
         'core_idl_files': [
             'animation/KeyframeEffect.idl',
             'animation/EffectModel.idl',
             'animation/AnimationEffectReadOnly.idl',
@@ skipping 3892 matching lines @@
             'animation/AnimationClockTest.cpp',
             'animation/AnimationInputHelpersTest.cpp',
             'animation/AnimationEffectTest.cpp',
             'animation/AnimationTest.cpp',
             'animation/AnimationStackTest.cpp',
             'animation/KeyframeEffectTest.cpp',
             'animation/AnimationTestHelper.cpp',
             'animation/AnimationTestHelper.h',
             'animation/AnimationTimelineTest.cpp',
             'animation/CompositorAnimationsTest.cpp',
-            'animation/CompositorAnimationsTestHelper.h',
             'animation/DeferredLegacyStyleInterpolationTest.cpp',
             'animation/EffectInputTest.cpp',
             'animation/InterpolableValueTest.cpp',
             'animation/InterpolationEffectTest.cpp',
             'animation/KeyframeEffectModelTest.cpp',
             'animation/PropertyHandleTest.cpp',
             'animation/TimingCalculationsTest.cpp',
             'animation/TimingInputTest.cpp',
             'animation/animatable/AnimatableColorTest.cpp',
             'animation/animatable/AnimatableDoubleAndBoolTest.cpp',
@@ skipping 210 matching lines @@
             'testing/PrivateScriptTestTest.cpp',
             'timing/MemoryInfoTest.cpp',
             'timing/PerformanceBaseTest.cpp',
             'timing/PerformanceObserverTest.cpp',
             'workers/WorkerThreadTest.cpp',
             'workers/WorkerThreadTestHelper.h',
             'xml/parser/SharedBufferReaderTest.cpp',
         ],
     }
 }