Move core/platform/animation files

Source/platform/blink_platform.gypi

Index: Source/platform/blink_platform.gypi
diff --git a/Source/platform/blink_platform.gypi b/Source/platform/blink_platform.gypi
index 44cb3be65ec7df6dc70e108bb7337f1b4239e285..258f0a3b1c16e07822deb6ef612d5579f0d0f37f 100644
--- a/Source/platform/blink_platform.gypi
+++ b/Source/platform/blink_platform.gypi
@@ -140,6 +140,10 @@
       'Widget.h',
       'WindowsKeyboardCodes.h',
       'animation/AnimationUtilities.h',
+      'animation/AnimationValue.h',
+      'animation/KeyframeValueList.cpp',
+      'animation/KeyframeValueList.h',
+      'animation/TimingFunction.h',
       'animation/UnitBezier.h',
       'audio/AudioArray.h',
       'audio/AudioBus.cpp',
@@ -915,5 +919,15 @@
       'weborigin/OriginAccessEntryTest.cpp',
       'weborigin/SecurityOriginTest.cpp',
     ],
+    # NOTE: these are legacy unit tests, do not add more!
+    'platform_web_unittest_files': [
+      'animation/TimingFunctionTestHelper.cpp',
+      'animation/TimingFunctionTestHelper.h',
+      'animation/TimingFunctionTestHelperTest.cpp',
+      'graphics/DeferredImageDecoderTest.cpp',
+      'graphics/ImageDecodingStoreTest.cpp',
+      'graphics/ImageFrameGeneratorTest.cpp',
+      'graphics/test/MockImageDecoder.h',
+    ],
   },
 }