CSSValue Immediates: Replace CSSValue usage with const references

Source/core/animation/DoubleStyleInterpolationTest.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/DoubleStyleInterpolation.h"
 
 #include "core/css/CSSPrimitiveValue.h"
 #include "core/css/CSSValueList.h"
 #include "core/css/StylePropertySet.h"
@@ skipping 63 matching lines @@
     }
 
     static InterpolableValue* getCachedValue(Interpolation& interpolation)
     {
         return interpolation.getCachedValueForTesting();
     }
 };
 
 TEST_F(AnimationDoubleStyleInterpolationTest, ZeroValue)
 {
-    CSSValue value = roundTrip(CSSPrimitiveValue::create(0, CSSPrimitiveValue::CSS_NUMBER));
+    const CSSValue& value = roundTrip(CSSPrimitiveValue::create(0, CSSPrimitiveValue::CSS_NUMBER));
     testPrimitiveValue(value, 0, CSSPrimitiveValue::CSS_NUMBER);
 }
 
 TEST_F(AnimationDoubleStyleInterpolationTest, AngleValue)
 {
     CSSValue value = roundTrip(CSSPrimitiveValue::create(10, CSSPrimitiveValue::CSS_DEG));
     testPrimitiveValue(value, 10, CSSPrimitiveValue::CSS_DEG);
 
     value = roundTrip(CSSPrimitiveValue::create(10, CSSPrimitiveValue::CSS_RAD));
     testPrimitiveValue(value, rad2deg(10.0), CSSPrimitiveValue::CSS_DEG);
@@ skipping 12 matching lines @@
         RangeAll);
     interpolableDouble->interpolate(0, 0.4);
     // progVal = start*(1-prog) + end*prog
     EXPECT_EQ(0.24, toInterpolableNumber(getCachedValue(*interpolableDouble))->value());
 }
 
 TEST_F(AnimationDoubleStyleInterpolationTest, ZeroValueFixedMotionRotation)
 {
     RefPtrWillBeRawPtr<CSSValueList> list = CSSValueList::createSpaceSeparated();
     list->append(CSSPrimitiveValue::create(0, CSSPrimitiveValue::CSS_DEG));
-    CSSValue value = roundTripMotionRotation(list.release(), false);
+    const CSSValue& value = roundTripMotionRotation(list.release(), false);
     testValueListMotionRotation(value, 0, false);
 }
 
 TEST_F(AnimationDoubleStyleInterpolationTest, ZeroValueAutoMotionRotation)
 {
     RefPtrWillBeRawPtr<CSSValueList> list = CSSValueList::createSpaceSeparated();
     list->append(CSSPrimitiveValue::createIdentifier(CSSValueAuto));
     list->append(CSSPrimitiveValue::create(0, CSSPrimitiveValue::CSS_DEG));
-    CSSValue value = roundTripMotionRotation(list.release(), true);
+    const CSSValue& value = roundTripMotionRotation(list.release(), true);
     testValueListMotionRotation(value, 0, true);
 }
 
 TEST_F(AnimationDoubleStyleInterpolationTest, ValueFixedMotionRotation)
 {
     RefPtrWillBeRawPtr<CSSValueList> list = CSSValueList::createSpaceSeparated();
     list->append(CSSPrimitiveValue::create(90, CSSPrimitiveValue::CSS_DEG));
-    CSSValue value = roundTripMotionRotation(list.release(), false);
+    const CSSValue& value = roundTripMotionRotation(list.release(), false);
     testValueListMotionRotation(value, 90, false);
 }
 
 TEST_F(AnimationDoubleStyleInterpolationTest, ValueAutoMotionRotation)
 {
     RefPtrWillBeRawPtr<CSSValueList> list = CSSValueList::createSpaceSeparated();
     list->append(CSSPrimitiveValue::createIdentifier(CSSValueAuto));
     list->append(CSSPrimitiveValue::create(90, CSSPrimitiveValue::CSS_DEG));
-    CSSValue value = roundTripMotionRotation(list.release(), true);
+    const CSSValue& value = roundTripMotionRotation(list.release(), true);
     testValueListMotionRotation(value, 90, true);
 }
 
 }