Disallow copying of the MemoryBuffer class.
Disallow copying of the MemoryBuffer class.

BUG=angle:836

Change-Id: Ie3f674ef6c321770209a37b1af06ea21d788f476
Reviewed-on: https://chromium-review.googlesource.com/231232
Reviewed-by: Jamie Madill <7e492b4f1c8458024932de3ba475cbf015424c30@chromium.org>
Tested-by: Geoff Lang <b6fc25fe0362055230985c05cbfa8adb741ccc0f@chromium.org>

larsbergstrom/angle,ecoal95/angle,ppy/angle,domokit/waterfall,mrobinson/rust-angle,MSOpenTech/angle,ghostoy/angle,ecoal95/angle,crezefire/angle,csa7mdm/angle,mikolalysenko/angle,ghostoy/angle,larsbergstrom/angle,crezefire/angle,bsergean/angle,mlfarrell/angle,MSOpenTech/angle,mrobinson/rust-angle,vvuk/angle,larsbergstrom/angle,bsergean/angle,vvuk/angle,vvuk/angle,bsergean/angle,mybios/angle,ecoal95/angle,mrobinson/rust-angle,MSOpenTech/angle,csa7mdm/angle,mybios/angle,MSOpenTech/angle,ecoal95/angle,larsbergstrom/angle,csa7mdm/angle,mlfarrell/angle,crezefire/angle,mybios/angle,mlfarrell/angle,ppy/angle,mrobinson/rust-angle,mikolalysenko/angle,csa7mdm/angle,ppy/angle,ghostoy/angle,mybios/angle,vvuk/angle,ecoal95/angle,mikolalysenko/angle,crezefire/angle,bsergean/angle,ppy/angle,mikolalysenko/angle,mlfarrell/angle,ghostoy/angle,mrobinson/rust-angle,domokit/waterfall