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Replace the deprecated DISALLOW_COPY_AND_ASSIGN macro with deleted
copy constructor and assignment operator.

Change-Id: I63c8719a9ee49b602d3a6e5e9c74925f2699551a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2590690
Commit-Queue: Darwin Huang <huangdarwin@chromium.org>
Reviewed-by: Darwin Huang <huangdarwin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#836896}