<chromium> Use ANGLE libraries from the Qt build / installation.

This moves libEGL and libGLESv2 from dependencies to
libraries where needed.

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>
<third_party/angle> Disable building libEGL.dll and libGLESv2.dll.

This is part of using the ANGLE that is built / installed by Qt.

Change-Id: Ib71d47392690dab6cf874aec13db9e98710de684
Reviewed-by: Andras Becsi <andras.becsi@digia.com>