Move Animatable* hierarchy into new folder.

Source/core/animation/animatable/AnimatableValueTestHelperTest.cpp

 /*
  * Copyright (c) 2013, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 12 matching lines @@
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 
-#include "core/animation/AnimatableValueTestHelper.h"
+#include "core/animation/animatable/AnimatableValueTestHelper.h"
 
 #include "core/rendering/ClipPathOperation.h"
 #include "core/rendering/style/BasicShapes.h"
 #include "core/svg/SVGLengthContext.h"
 #include "platform/transforms/ScaleTransformOperation.h"
 #include "platform/transforms/TranslateTransformOperation.h"
 
 #include <gmock/gmock.h>
 #include <gtest/gtest.h>
 #include <sstream>
@@ skipping 62 matching lines @@
     EXPECT_EQ(
         ::std::string("AnimatableUnknown(none)"),
         PrintToString(AnimatableUnknown::create(CSSPrimitiveValue::createIdentifier(CSSValueNone).get())));
 
     EXPECT_EQ(
         ::std::string("AnimatableVisibility(VISIBLE)"),
         PrintToString(AnimatableVisibility::create(VISIBLE)));
 }
 
 } // namespace