Add javalang to //third_party

This Python library will be used in Chrome's Android build system to
modify Java files.

Bug: 968274
Change-Id: I8d5aacf4009e6b91b276ee2967f9b454523add1e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1639206
Auto-Submit: Tibor Goldschwendt <tiborg@chromium.org>
Reviewed-by: Ted Choc <tedchoc@chromium.org>
Commit-Queue: Tibor Goldschwendt <tiborg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#665674}

DEPS

@@ -1015,6 +1015,11 @@ deps = {
       'dep_type': 'cipd',
   },
 
+  'src/third_party/javalang/src': {
+      'url': Var('chromium_git') + '/external/github.com/c2nes/javalang.git' + '@' + 'f98ffcb31d1daa57fbe5bd6def8ad7c3126d8242',
+      'condition': 'checkout_android',
+  },
+
   'src/third_party/jsoncpp/source':
     Var('chromium_git') + '/external/github.com/open-source-parsers/jsoncpp.git' + '@' + 'f572e8e42e22cfcf5ab0aea26574f408943edfa4', # from svn 248
 

third_party/.gitignore

@@ -114,6 +114,7 @@
 /instrumented_libraries/scripts/out/*
 /javax_inject/lib/
 /jacoco/lib/
+/javalang/src/
 /jsoncpp/source
 /jsr-305/src
 /junit/src

third_party/javalang/LICENSE

+Copyright (c) 2013 Christopher Thunes
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
\ No newline at end of file

third_party/javalang/OWNERS

+tiborg@chromium.org
+wnwen@chromium.org
\ No newline at end of file

third_party/javalang/README.chromium

+Name: Pure Python Java parser and tools
+Short Name: javalang
+URL: https://github.com/c2nes/javalang
+Version: 0.12.0
+License: MIT
+License File: NOT_SHIPPED
+Security Critical: no
+
+Description:
+javalang is a pure Python library for working with Java source code. javalang
+provides a lexer and parser targeting Java 8. The implementation is based on the
+Java language spec available at
+http://docs.oracle.com/javase/specs/jls/se8/html/.
+
+Chrome uses javalang for Android builds to modify Java files.