[Oilpan] Migrate most classes under core/animations to Oilpan heap.

Source/core/animation/SVGStrokeDasharrayStyleInterpolationTest.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "core/animation/SVGStrokeDasharrayStyleInterpolation.h"
 
 #include "core/css/CSSPrimitiveValue.h"
 #include "core/css/CSSValueList.h"
 
 #include <gtest/gtest.h>
 
 namespace blink {
 
 class AnimationSVGStrokeDasharrayStyleInterpolationTest : public ::testing::Test {
 protected:
     static PassRefPtrWillBeRawPtr<CSSValueList> interpolableValueToStrokeDasharray(const InterpolableValue& value)
     {
         return SVGStrokeDasharrayStyleInterpolation::interpolableValueToStrokeDasharray(value);
     }
 
     static PassRefPtrWillBeRawPtr<CSSValueList> roundTrip(const CSSValue& value)
     {
-        RefPtrWillBeRawPtr<SVGStrokeDasharrayStyleInterpolation> interpolation = SVGStrokeDasharrayStyleInterpolation::maybeCreate(value, value, CSSPropertyStrokeDasharray);
+        SVGStrokeDasharrayStyleInterpolation* interpolation = SVGStrokeDasharrayStyleInterpolation::maybeCreate(value, value, CSSPropertyStrokeDasharray);
         ASSERT(interpolation);
         return SVGStrokeDasharrayStyleInterpolation::interpolableValueToStrokeDasharray(*interpolation->m_start);
     }
 
     static void testPrimitiveValue(const CSSValue& cssValue, double value, CSSPrimitiveValue::UnitType unitType)
     {
         EXPECT_TRUE(cssValue.isPrimitiveValue());
         const CSSPrimitiveValue& primitiveValue = toCSSPrimitiveValue(cssValue);
 
         EXPECT_EQ(primitiveValue.typeWithCalcResolved(), unitType);
@@ skipping 36 matching lines @@
 TEST_F(AnimationSVGStrokeDasharrayStyleInterpolationTest, None)
 {
     RefPtrWillBeRawPtr<CSSPrimitiveValue> start = CSSPrimitiveValue::createIdentifier(CSSValueNone);
 
     RefPtrWillBeRawPtr<CSSValueList> value = roundTrip(*start);
     EXPECT_EQ(value->length(), 1u);
     testPrimitiveValue(*value->item(0), 0, CSSPrimitiveValue::UnitType::Pixels);
 }
 
 }