Replaced RefPtr::release with std::move in Source/core.

third_party/WebKit/Source/core/animation/InterpolationValue.h

Index: third_party/WebKit/Source/core/animation/InterpolationValue.h
diff --git a/third_party/WebKit/Source/core/animation/InterpolationValue.h b/third_party/WebKit/Source/core/animation/InterpolationValue.h
index 7bd9e28e6347f7be8d8b5a83362be8d6e0c3e40f..cbe42bb8a89c9a73731edc4705c32150646261c4 100644
--- a/third_party/WebKit/Source/core/animation/InterpolationValue.h
+++ b/third_party/WebKit/Source/core/animation/InterpolationValue.h
@@ -28,11 +28,11 @@ struct InterpolationValue {
 
   InterpolationValue(InterpolationValue&& other)
       : interpolableValue(std::move(other.interpolableValue)),
-        nonInterpolableValue(other.nonInterpolableValue.release()) {}
+        nonInterpolableValue(std::move(other.nonInterpolableValue)) {}
 
   void operator=(InterpolationValue&& other) {
     interpolableValue = std::move(other.interpolableValue);
-    nonInterpolableValue = other.nonInterpolableValue.release();
+    nonInterpolableValue = std::move(other.nonInterpolableValue);
   }
 
   operator bool() const { return interpolableValue.get(); }