Fix GLES 2 interface generator to output correct pepper interfaces.

Two functions were renamed, so the pepper interface generator should be able to handle outputting the old names. Also, have the generator always output the ppapi libs, instead of requiring a command-line option.

BUG=
R=bbudge@chromium.org, sievers@chromium.org

Review URL: https://codereview.chromium.org/118853002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241988 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 241988