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

Source/core/animation/LengthBoxStyleInterpolationTest.cpp

 // Copyright 2014 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/LengthBoxStyleInterpolation.h"
 
 #include "core/animation/LengthStyleInterpolation.h"
 #include "core/css/CSSPrimitiveValue.h"
 #include "core/css/Rect.h"
 #include "core/css/StylePropertySet.h"
 
 #include <gtest/gtest.h>
 
 namespace blink {
 
 class AnimationLengthBoxStyleInterpolationTest : public ::testing::Test {
 protected:
-    static PassOwnPtrWillBeRawPtr<InterpolableValue> lengthBoxToInterpolableValue(const CSSValue& value)
+    static InterpolableValue* lengthBoxToInterpolableValue(const CSSValue& value)
     {
         return LengthBoxStyleInterpolation::lengthBoxtoInterpolableValue(value, value, false);
     }
 
     static PassRefPtrWillBeRawPtr<CSSValue> interpolableValueToLengthBox(InterpolableValue* value, const CSSValue& start, const CSSValue& end)
     {
         return LengthBoxStyleInterpolation::interpolableValueToLengthBox(value, start, end);
     }
 
     static PassRefPtrWillBeRawPtr<CSSValue> roundTrip(PassRefPtrWillBeRawPtr<CSSValue> value)
     {
-        return interpolableValueToLengthBox(lengthBoxToInterpolableValue(*value).get(), *value, *value);
+        return interpolableValueToLengthBox(lengthBoxToInterpolableValue(*value), *value, *value);
     }
 
     static void testPrimitiveValue(RefPtrWillBeRawPtr<CSSValue> value, double left, double right, double top, double bottom, CSSPrimitiveValue::UnitType unitType)
     {
         EXPECT_TRUE(value->isPrimitiveValue());
         Rect* rect = toCSSPrimitiveValue(value.get())->getRectValue();
 
         EXPECT_EQ(rect->left()->getDoubleValue(), left);
         EXPECT_EQ(rect->right()->getDoubleValue(), right);
         EXPECT_EQ(rect->top()->getDoubleValue(), top);
@@ skipping 71 matching lines @@
     rectPer->setLeft(CSSPrimitiveValue::create(30, CSSPrimitiveValue::UnitType::Percentage));
     rectPer->setRight(CSSPrimitiveValue::create(-30, CSSPrimitiveValue::UnitType::Percentage));
     rectPer->setTop(CSSPrimitiveValue::create(30, CSSPrimitiveValue::UnitType::Percentage));
     rectPer->setBottom(CSSPrimitiveValue::create(-30, CSSPrimitiveValue::UnitType::Percentage));
 
     value = roundTrip(CSSPrimitiveValue::create(rectPer.release()));
     testPrimitiveValue(value, 30, -30, 30, -30, CSSPrimitiveValue::UnitType::Percentage);
 }
 
 }