Remove third_party/mesa. (#2797)

third_party/mesa/OWNERS

-kbr@chromium.org
-senorblanco@chromium.org
-piman@chromium.org
-marcheu@chromium.org

third_party/mesa/README.chromium

-Name: mesa
-Version: 9.0.3
-URL: http://www.mesa3d.org/
-License: MIT and LGPL v2
-Security Critical: Yes
-
-Description:
-This directory contains a copy of the Mesa sources with minor
-modifications to work in Chromium's build infrastructure.
-
-The license file in this directory is derived from src/docs/license.html
-and src/docs/COPYING.
-
-Modifications made:
-- Added the file README.chromium (this file)
-
-- Disabled optimizations using #pragma optimize('', off) in the
-  following files:
-  - src/src/mesa/main/mipmap.c
-  - src/src/mesa/main/pack.c
-  - src/src/mesa/math/m_eval.c
-  - src/src/mesa/swrast/s_texcombine.c
-
-- Checked in sources normally autogenerated during Mesa's build
-  process under src/chromium_gensrc.
-
-- Modified _mesa_add_parameter to not read from uninitialized
-  memory
-
-- Added typedefs for EGLNative*Type in eglplatform.h, guarded by an
-  __APPLE__ define
-
-- Modified glsl_strtod in src/glsl/strtod.c to use strtod instead of
-  strtod_l on Android
-
-- Added an #include for <assert.h> at the top of
-  src/gallium/auxiliary/util/u_debug.h
-
-- Fix a bug with Multiple Render Targets, see
-  https://code.google.com/p/chromium/issues/detail?id=308715
-
-- #ifdef out inline definitions of math functions that are present in
-  VS2013's standard library.
-
-- #pragma optimize off around _swrast_write_zoomed_z_span, ICEing on
-  VS2013: http://crbug.com/348350.
-
-- Disabled "#pragma export" usage in gl.h and osmesa.h,
-  https://bugs.freedesktop.org/show_bug.cgi?id=77749
-
-- Porting to x64 Android. Remove redefinitions of log2 and log2f.
-  https://codereview.chromium.org/216773005/
-
-- Excluded src/mapi/mapi/mapi.{h,c} from the build.
-
-- Backported f8e7aa2827e2bdb1ed238cbdd351be3c8a6e9b12 and
-  e20a2df4017ab10dd7199936948c6ac809bfacb6 to fix issues with
-  glGetIntegerv(GL_IMPLEMENTATION_COLOR_READ_FORMAT_OES) when no
-  framebuffer is bound

third_party/mesa/README.txt

-Compilation has a few phases:
-
-1. Generate the header and dispatch source files that have to match the GL api.
-   These read in a description of the GL api in the form of XML files. In
-   addition, generate the GLSL parser and lexer using flex and bison. These
-   sources are needed for step 2
-2. Compile everything in src/glsl into a library. This step uses the parser and
-   lexer output.
-3. Compile the compiler (executable) that can create the builtin functions'
-   source file.  Note that this step uses builtin_stubs.cpp because we haven't
-   generated the actual builtin functions' source file yet.
-4. Invoke the compiler that we just built to create
-   gen/mesa/builtin_function.cpp
-5. Compile the rest of mesa, using the builtins that we created in step 4. In
-   addition, link in all the files that we've previously compiled in step 2.

third_party/mesa/generate_git_sha1.py

-# Copyright (c) 2013 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-import os
-import os.path
-import sys
-
-output = sys.argv[1]
-parentdir = os.path.abspath(os.path.join(output, os.pardir))
-
-#The original body of this file is generated by this bash script:
-#
-#touch "${DIR}/git_sha1.h.tmp"
-#if test -d .git; then \
-#		if which git > /dev/null; then \
-#		    git log -n 1 --oneline | \
-#			sed 's/^\([^ ]*\) .*/#define MESA_GIT_SHA1 "git-\1"/' \
-#			> "${DIR}/git_sha1.h.tmp" ; \
-#		fi \
-#	fi
-#if ! cmp -s "${DIR}/git_sha1.h.tmp" "${DIR}/git_sha1.h"; then \
-#		mv "${DIR}/git_sha1.h.tmp" "${DIR}/git_sha1.h" ;\
-#	else \
-#		rm "${DIR}/git_sha1.h.tmp" ;\
-#	fi
-#
-#However, Chromium shouldn't depend on Bash, and this preprocessor macro isn't
-#neccessary in the first place
-
-if not os.path.isdir(parentdir):
-  os.makedirs(parentdir)
-
-with open(output, "w") as f:
-  pass

third_party/mesa/redirectoutput.py

-# Copyright (c) 2013 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-import os
-import os.path
-import subprocess
-import sys
-
-if len(sys.argv) < 3:
-  print "Usage: %s OUTPUTFILE SCRIPTNAME ARGUMENTS" % sys.argv[0]
-  print "Re-execs the python interpreter against SCRIPTNAME with ARGS,"
-  print "redirecting output to OUTPUTFILE."
-  sys.exit(1)
-
-abs_outputfile = os.path.abspath(sys.argv[1])
-abs_outputdir = os.path.dirname(abs_outputfile)
-
-if not os.path.isdir(abs_outputdir):
-  os.makedirs(abs_outputdir)
-
-ret = 0
-
-with open(abs_outputfile, "w") as f:
-  ret = subprocess.Popen([sys.executable] + sys.argv[2:], stdout=f).wait()
-
-if ret:
-  os.remove(abs_outputfile)
-  sys.exit(ret)