Fork: Skip sharing GL_LUMINANCE textures

Due bugs in some drivers, sharing GL_LUMINANCE fails and causes causes a
NPE crash. WebRTC is the only feature using GL_LUMINANCE textures which
do not require to be shared, so skip them altogether.

Forking because situation in trunk has changed significantly and this is
no longer appropriate.

BUG: 19366032
Change-Id: I09c076068e1f38daa344009ca7b12cf30ead6df1
1 file changed