Reset functionality doesn't work for Skinned Mesh Renderer.

Steps to repro for Skinned Mesh Renderer:
1. Open a new project.
2. Create a cube game object
3. Add Skinned Mesh Renderer.
4. Change the following property values > Click on Cogwheel > Reset.

Properties which do not reset:
1. Mesh.
2. Root Bone.
3. Light Probes
4. Reflection Probes
5. Anchor Override
6. Cast Shadows
7. Receive Shadows.
8. motion Vectors.
9. Dynamic occluded.

Actual Result:
Properties value does not reset for Skinned Mesh Renderer.

Expected result:
Properties value should reset for Skinned Mesh Renderer.

Reproducible on:
2019.1.0a5, 2018.3.0b6, 2018.3.0b1, 2018.3.0a11, 2018.3.0a1, 2018.2.8f1, 2018.2.0a1, 2017.4.12f1.

Environment:
Windows and Mac.