Reland 'Add Dawn, SPIRV-Cross and GLFW to //third_party'

This is a reland after contacting the infra team about the addition of
dawn.googlesource.com to allowed_hosts. It also doesn't have the Dawn
build targets listed in BUILD.gn. These will be listed separately.

Dawn is a library implementing WebGPU in native. It uses SPIRV-Cross to
translate shaders from SPIRV to other shading languages, and requires
glfw for testing.

Adds the Zlib license to the list of allowed license for Android.

This also adds back shaderc that was very recently removed. So hopefully
a new third_party review isn't required.

BUG=chromium:870747

Change-Id: Ib5bb0530fc147e41a4f31796c30542e032bf0603
Reviewed-on: https://chromium-review.googlesource.com/c/1286135
Reviewed-by: Jochen Eisinger <jochen@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
Cr-Commit-Position: refs/heads/master@{#601445}

DEPS

@@ -97,11 +97,12 @@ vars = {
 
   'android_git': 'https://android.googlesource.com',
   'aomedia_git': 'https://aomedia.googlesource.com',
-  'chromium_git': 'https://chromium.googlesource.com',
-  'swiftshader_git': 'https://swiftshader.googlesource.com',
-  'pdfium_git': 'https://pdfium.googlesource.com',
   'boringssl_git': 'https://boringssl.googlesource.com',
+  'chromium_git': 'https://chromium.googlesource.com',
+  'dawn_git': 'https://dawn.googlesource.com',
+  'pdfium_git': 'https://pdfium.googlesource.com',
   'skia_git': 'https://skia.googlesource.com',
+  'swiftshader_git': 'https://swiftshader.googlesource.com',
   'webrtc_git': 'https://webrtc.googlesource.com',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling sfntly
@@ -223,6 +224,18 @@ vars = {
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.
   'spv_headers_revision': '801cca8104245c07e8cc53292da87ee1b76946fe',
+  # Three lines of non-changing comments so that
+  # the commit queue can handle CLs rolling feed
+  # and whatever else without interference from each other.
+  'spirv_cross_revision': '69b034f26e28a76a6f4e5d9521123072b24d7ea2',
+  # Three lines of non-changing comments so that
+  # the commit queue can handle CLs rolling feed
+  # and whatever else without interference from each other.
+  'shaderc_revision': '196d38f64e4d919ddb26557f176ca134e2d88ddc',
+  # Three lines of non-changing comments so that
+  # the commit queue can handle CLs rolling feed
+  # and whatever else without interference from each other.
+  'dawn_revision': '16092faa163b20f6b85ff407b1ec1d61cb9d7f2a',
 }
 
 # Only these hosts are allowed for dependencies in this DEPS file.
@@ -234,6 +247,7 @@ allowed_hosts = [
   'chrome-infra-packages.appspot.com',
   'chrome-internal.googlesource.com',
   'chromium.googlesource.com',
+  'dawn.googlesource.com',
   'pdfium.googlesource.com',
   'skia.googlesource.com',
   'swiftshader.googlesource.com',
@@ -403,6 +417,14 @@ deps = {
       'dep_type': 'cipd',
   },
 
+  # SPIRV-Cross is in third_party/spirv-cross/spirv-cross instead of
+  # third_party/spirv-cross/src  because its header files are at the root of
+  # the repository and dependencies include them like so:
+  #   #include "spirv-cross/spirv_glsl.hpp"
+  'src/third_party/spirv-cross/spirv-cross':
+    Var('chromium_git') + '/external/github.com/KhronosGroup/SPIRV-Cross.git@' +
+        Var('spirv_cross_revision'),
+
   'src/third_party/spirv-headers/src':
     Var('chromium_git') + '/external/github.com/KhronosGroup/SPIRV-Headers.git@' +
         Var('spv_headers_revision'),
@@ -411,6 +433,10 @@ deps = {
     Var('chromium_git') + '/external/github.com/KhronosGroup/SPIRV-Tools.git@' +
         Var('spv_tools_revision'),
 
+  'src/third_party/shaderc/src':
+    Var('chromium_git') + '/external/github.com/google/shaderc.git@' +
+        Var('shaderc_revision'),
+
   'src/third_party/accessibility_test_framework': {
       'packages': [
           {
@@ -537,6 +563,12 @@ deps = {
   'src/third_party/angle':
     Var('chromium_git') + '/angle/angle.git' + '@' +  Var('angle_revision'),
 
+  'src/third_party/dawn':
+    Var('dawn_git') + '/dawn.git' + '@' +  Var('dawn_revision'),
+
+  'src/third_party/glfw/src':
+    Var('chromium_git') + '/external/github.com/glfw/glfw.git@' +  '096efdf798896cff80a0b2db08d7398b703406fe',
+
   'src/third_party/apache-portable-runtime/src': {
       'url': Var('chromium_git') + '/external/apache-portable-runtime.git' + '@' + 'c3f11fcd86b42922834cae91103cf068246c6bb6',
       'condition': 'checkout_android',
@@ -705,7 +737,7 @@ deps = {
   },
 
   'src/third_party/glslang/src':
-    Var('chromium_git') + '/external/github.com/google/glslang.git' + '@' + 'ec1476b7060306fd9109faf7a4c70a20ea3b538c',
+    Var('chromium_git') + '/external/github.com/KhronosGroup/glslang.git' + '@' + 'ca042a0ffbb6fe09a47c1c867d911b3a69d2102e',
 
   'src/third_party/google_toolbox_for_mac/src': {
       'url': Var('chromium_git') + '/external/github.com/google/google-toolbox-for-mac.git' + '@' + Var('google_toolbox_for_mac_revision'),

build_overrides/dawn.gni

@@ -0,0 +1,11 @@
+# Copyright 2018 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.
+
+# The paths to Dawn's dependencies
+dawn_glfw_dir = "//third_party/glfw/src"
+dawn_jinja2_dir = "//third_party/jinja2"
+dawn_googletest_dir = "//third_party/googletest/src"
+dawn_shaderc_dir = "//third_party/shaderc/src"
+dawn_spirv_cross_dir = "//third_party/spirv-cross/spirv-cross"
+dawn_spirv_tools_dir = "//third_party/SPIRV-Tools/src"

build_overrides/glslang.gni

@@ -0,0 +1,5 @@
+# Copyright 2018 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.
+
+glslang_spirv_tools_dir = "//third_party/SPIRV-Tools/src"

build_overrides/shaderc.gni

@@ -0,0 +1,6 @@
+# Copyright 2018 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.
+
+shaderc_glslang_dir = "//third_party/glslang/src"
+shaderc_spirv_tools_dir = "//third_party/SPIRV-Tools/src"

third_party/.gitignore

@@ -58,6 +58,7 @@
 /cros_system_api
 /custom_tabs_client/src
 /cygwin
+/dawn
 /depot_tools
 /devtools-node-modules
 /directxsdk
@@ -76,6 +77,7 @@
 /gestures/gestures
 /gles1_conform
 /gles2_conform
+/glfw/src
 /glslang/src
 /glslang-angle/src
 /gn/
@@ -197,6 +199,7 @@
 /smhasher/src
 /snappy/src
 /speex
+/spirv-cross/spirv-cross
 /spirv-headers/src
 /SPIRV-Tools/src
 /spirv-tools-angle/src

third_party/PRESUBMIT.py

@@ -18,6 +18,7 @@ ANDROID_WHITELISTED_LICENSES = [
   'SGI Free Software License B',
   'University of Illinois\/NCSA Open Source',
   'X11',
+  'Zlib',
 ]
 
 def LicenseIsCompatibleWithAndroid(input_api, license):

third_party/glfw/OWNERS

@@ -0,0 +1,4 @@
+cwallez@chromium.org
+kainino@chromium.org
+
+# COMPONENT: Internals>GPU>Internals

third_party/glfw/README.chromium

@@ -0,0 +1,14 @@
+Name: GLFW
+Short Name: GLFW
+URL: https://github.com/glfw/glfw
+Version: 3.3-dev
+Revision: 096efdf798896cff80a0b2db08d7398b703406fe
+Security Critical: no
+License: Zlib
+License File: NOT_SHIPPED
+
+Description:
+GLFW is an Open Source, multi-platform library for OpenGL, OpenGL ES and
+Vulkan application development. It provides a simple, platform-independent API
+for creating windows, contexts and surfaces, reading input, handling events,
+etc.

third_party/shaderc/OWNERS

@@ -0,0 +1,4 @@
+cwallez@chromium.org
+dsinclair@chromium.org
+
+# COMPONENT: Internals>GPU>Internals

third_party/shaderc/README.chromium

@@ -0,0 +1,10 @@
+Name: Shaderc
+Short Name: shaderc
+URL: https://github.com/google/shaderc
+Version: Unknown
+Security Critical: yes
+License: Apache 2.0
+License File: src/LICENSE
+
+Description:
+A collection of SPIR-V related tools/libraries.

third_party/spirv-cross/OWNERS

@@ -0,0 +1,4 @@
+cwallez@chromium.org
+dsinclair@chromium.org
+
+# COMPONENT: Internals>GPU>Internals

third_party/spirv-cross/README.chromium

@@ -0,0 +1,12 @@
+Name: SPIRV-Cross
+Short Name: SPIRV-Cross
+URL: https://github.com/KhronosGroup/SPIRV-Cross
+Version: Unknown
+Security Critical: yes
+License: Apache 2.0
+License File: spirv-cross/LICENSE
+
+Description:
+A translator from SPIR-V bytecode to other shading languages like GLSL, HLSL
+and MSL. This project is not secure (yet!) and should only be used for
+prototyping, and not shipped to users.