Update gl2.h and gl2ext.h headers from Khronos.

Update gl2.h and gl2ext.h headers from Khronos.
These headers make using gl extensions easier.
BUG=none
TEST=ppb_graphics3d,building of gles book examples
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=135074

[greggman, 2012-05-02 23:20:49]

lgtm

https://chromiumcodereview.appspot.com/10290006/diff/8001/ppapi/native_client...
File ppapi/native_client/src/shared/ppapi_proxy/browser_ppp.cc (right):

https://chromiumcodereview.appspot.com/10290006/diff/8001/ppapi/native_client...
ppapi/native_client/src/shared/ppapi_proxy/browser_ppp.cc:172: const_cast<char
*>(PPP_INSTANCE_INTERFACE_1_0),
80 chars?

[nfullagar, 2012-05-03 01:15:11]

thx.  Added John Bauman's suggestion to remove
#undef GL_APIENTRY
#define GL_APIENTRY from gl2.h

GL_APIENTRY will get its definition from gl2platform.h (same behavior as the
previous gl2.h header.)

[commit-bot: I haz the power, 2012-05-03 01:16:10]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/nfullagar@google.com/10290006/25002

[commit-bot: I haz the power, 2012-05-03 01:16:37]

Presubmit check for 10290006-25002 failed and returned exit status 1.

Running presubmit commit checks ...

** Presubmit Warnings **
Found lines longer than 80 characters (first 5 shown).
  ppapi/lib/gl/include/GLES2/gl2ext.h, line 946, 188 chars \
  ppapi/lib/gl/include/GLES2/gl2ext.h, line 949, 195 chars \
  ppapi/lib/gl/include/GLES2/gl2ext.h, line 958, 153 chars \
  ppapi/lib/gl/include/GLES2/gl2ext.h, line 961, 160 chars \
  ppapi/lib/gl/include/GLES2/gl2ext.h, line 968, 85 chars

License must match:
.*? Copyright \(c\) 2012 The Chromium Authors\. All rights reserved\.\n.*? Use
of this source code is governed by a BSD-style license that can be\n.*? found in
the LICENSE file\.(?: \*/)?\n
Found a bad license header in these files:
  ppapi/lib/gl/include/GLES2/gl2.h \
  ppapi/lib/gl/include/GLES2/gl2ext.h

** Presubmit ERRORS **
Missing LGTM from an OWNER for files in these directories:
    ppapi

Missing PPAPI IDL for stable interface:

***************
  ppapi/c/ppb_opengles2.h
***************

Presubmit checks took 4.2s to calculate.

[nfullagar, 2012-05-03 02:02:24]

committed by hand - auto generated files rejected by presubmit checks in CQ.
Committed revision 135074.