Fix leaked ID3D11Resource object.

BUG=427245

Change-Id: If4833df5dc405a2a8d87a577bbd47b954613e321
Reviewed-on: https://chromium-review.googlesource.com/231246
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Tested-by: Geoff Lang <geofflang@chromium.org>
Disallow copying of the MemoryBuffer class.

BUG=angle:836

Change-Id: Ie3f674ef6c321770209a37b1af06ea21d788f476
Reviewed-on: https://chromium-review.googlesource.com/231232
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tested-by: Geoff Lang <geofflang@chromium.org>