Enable openscreen compilation in Chromium

This change enables third_party/openscreen to be built as part of gn_all
so we can get coverage on linux bots which will help to ensure we aren't
breaking our Chromium compatibility while we are still pre-integration.
This doesn't cause anything to be linked into any shipping binaries.

Bug: 951615
Change-Id: I65a67054d9545865a51c5dc3cf8d1bb206fc8391
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1562751Reviewed-by: Mirko Bonadei <mbonadei@chromium.org>
Reviewed-by: Dirk Pranke <dpranke@chromium.org>
Commit-Queue: Brandon Tolsch <btolsch@chromium.org>
Cr-Commit-Position: refs/heads/master@{#659696}

BUILD.gn

@@ -785,6 +785,10 @@ group("gn_all") {
     "//third_party/pffft:pffft_benchmark",
     "//third_party/pffft:pffft_unittest",
   ]
+
+  if (is_linux) {
+    deps += [ "//third_party/openscreen/src:gn_all" ]
+  }
 }
 
 if ((is_linux || is_win) && enable_remoting && !use_ozone) {

DEPS

@@ -1154,7 +1154,7 @@ deps = {
     Var('chromium_git') + '/external/github.com/cisco/openh264' + '@' + '6f26bce0b1c4e8ce0e13332f7c0083788def5fdf',
 
   'src/third_party/openscreen/src':
-    Var('chromium_git') + '/openscreen' + '@' + 'b1d095ba4f8f3ec1efd90dbd5cb0a37e5b4b21f7',
+    Var('chromium_git') + '/openscreen' + '@' + '035ec87f86835b249e5d873d0b52add07b299406',
 
   'src/third_party/ow2_asm': {
       'packages': [

third_party/abseil-cpp/absl/strings/BUILD.gn

@@ -13,6 +13,7 @@ import("//build_overrides/build.gni")
 if (build_with_chromium) {
   visibility = [
     "//libassistant/*",
+    "//third_party/openscreen/*",
     "//third_party/webrtc/*",
     "//third_party/abseil-cpp/*",
     "//third_party/googletest:gtest",

third_party/abseil-cpp/absl/types/BUILD.gn

@@ -13,6 +13,7 @@ import("//build_overrides/build.gni")
 if (build_with_chromium) {
   visibility = [
     "//libassistant/*",
+    "//third_party/openscreen/*",
     "//third_party/webrtc/*",
     "//third_party/abseil-cpp/*",
     "//third_party/googletest:gtest",

third_party/openscreen/README.chromium

@@ -2,7 +2,7 @@ Name: Open Screen Protocol Library
 Short Name: openscreen
 URL: https://chromium.googlesource.com/openscreen
 Version: 0
-Revision: 9499a256bc609e9efdf15a268fd047127870af41
+Revision: 035ec87f86835b249e5d873d0b52add07b299406
 License: BSD
 License File: src/LICENSE
 Security Critical: yes