[fuchsia] Update README.chromium for fuchsia-sdk

Also remove the copy of the LICENSE file and an obsolete SDK path in
third_party/.gitignore.

Change-Id: Id67cb2bfec128572f23f8dcdccc08b54a2601338
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2427964Reviewed-by: Wez <wez@chromium.org>
Reviewed-by: Sergey Ulanov <sergeyu@chromium.org>
Commit-Queue: David Dorwin <ddorwin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#812846}

third_party/.gitignore

@@ -81,7 +81,6 @@
 /freetype/src
 /fuchsia-sdk/images
 /fuchsia-sdk/sdk
-/fuchsia-sdk-arm64
 /gles2_conform
 /glfw/src
 /glslang/src

third_party/fuchsia-sdk/LICENSE

-// Copyright 2019 The Fuchsia Authors. All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//    * 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
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//    * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "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, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

third_party/fuchsia-sdk/README.chromium

-Name: Fuchsia NDK
-URL: https://fuchsia.googlesource.com/docs/+/master/development/sdk/README.md
+Name: Fuchsia SDK
+URL: https://fuchsia.dev/fuchsia-src/development/sdk/download
 Version: 0
-Security Critical: no
-License: BSD 3-Clause, MIT, GPL v2
+Security Critical: yes
+License: BSD 3-Clause, Apache 2.0, MIT
+License File: sdk/LICENSE
 
 Description:
 This directory contains the current Fuchsia SDK. The SDK contains headers,
 libraries and tools that are needed to build Chromium for Fuchsia. It also
-contains qemu, which is used to run tests on Fuchsia.
+contains boot images that are used to run tests on Fuchsia in emulation.