Make SkParagraph Run moveable.
Make SkParagraph Run moveable.

Because a destructor was declared the move constructor and assignment
were not implicitly declared or defined. Default everything to make it
obvious that Run may be copied or moved.

Change-Id: I862b392b12a15b9d44c58da4f73ddace7d5a1308
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/290538
Reviewed-by: Julia Lavrova <66a91ddff0a66e6df510780220f7ed6687af5ca5@google.com>
Commit-Queue: Ben Wagner <53965154ffeecc4a10886eab9259e95965f2979a@google.com>

aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,google/skia,google/skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,google/skia,google/skia,google/skia,google/skia,google/skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,google/skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,google/skia,google/skia