tree d4f0df4e2f1f04d336eb5cdc2092b3af92b69572
parent dfbcee6cb8ab9cf89b9052eb7498e453afdb1463
author Mathias Agopian <mathias@google.com> 1327815840 -0800
committer Mathias Agopian <mathias@google.com> 1327904529 -0800

add support for GL_EXT_debug_marker

This extension is always added to the GL_EXTENSIONS
extension string for the current GL context, regardless
of if it's supported by the h/w driver.

The extension itself will be handled by GLES_trace (eventually),
when GLES_trace is not enabled, it'll result to a no-op.

If the h/w implementation has this extension, we'll call that version
instead of our dummy version.

Change-Id: Ie5dd3387c4d45cd5ed5f03b73bda6045620a96bc