The GLSL + ESSL autogenerated symbol table is too large for
android, and android also doesn't need desktop GL functionality
If on android, compile the ESSL only symbol table

Bug: chromium:996286
Change-Id: I14dfc7748dae389e78c35f82a390c67962665356
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1757372
Commit-Queue: Clemen Deng <clemendeng@google.com>
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>