<chromium> Use ANGLE libraries from Qt.

This disables building libEGL and libGLESv2 by removing them
from the build file and moving them from dependencies to
libraries where needed.

This keeps the Chromium ANGLE's translator and preprocessor
targets as those are not shipped as separate libraries in
binary installations of Qt.

This also adds support for using the correct configuration
of the ANGLE libraries for linking and runtime loading.

Change-Id: I8c3a5eb11517bf03e921b257eeb3a34b7bc841ea
Reviewed-by: Andras Becsi <andras.becsi@digia.com>