Update license and readme for use downstream

LICENSE

-// Copyright (C) 2002-2013 The ANGLE Project Authors. 
+// Copyright 2018 The ANGLE Project Authors.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
@@ -8,7 +8,7 @@
 //     Redistributions of source code must retain the above copyright
 //     notice, this list of conditions and the following disclaimer.
 //
-//     Redistributions in binary form must reproduce the above 
+//     Redistributions in binary form must reproduce the above
 //     copyright notice, this list of conditions and the following
 //     disclaimer in the documentation and/or other materials provided
 //     with the distribution.
@@ -19,7 +19,7 @@
 //     prior written permission.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 // FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 // COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,

README.chromium

 Name: ANGLE
-URL: https://code.google.com/p/angleproject/
-Version: 2422
+URL: http://angleproject.org
+Version: unknown
 License: BSD
 License File: LICENSE
 
 Description:
-ANGLE is a conformant implementation of the OpenGL ES 2.0
-specification that is hardware‐accelerated via Direct3D.
+The goal of ANGLE is to allow users of multiple operating systems
+to seamlessly run WebGL and other OpenGL ES content by translating
+OpenGL ES API calls to one of the hardware-supported APIs available
+for that platform.