Zero the height and width of the WebGL canvases on cleanup
Faster chunkedStream_getByte()
use getBytes() instead of looping over getByte()
Merge pull request #5015 from Snuffleupagus/zero-WebGL-canvases

Zero the height and width of the WebGL canvases on cleanup
Merge pull request #5005 from fkaelberer/faster_ChunkedStream_getByte

Faster chunkedStream_getByte()