Merge tag 'sdk-1.2.198.0' into HEAD

This updates glslang to 1.2.198.
Bug: 90846

Change-Id: I8a446330eacc0cf1e6bd17ca1bcd70433d91bd92
diff --git a/BUILD.gn b/BUILD.gn
index 06d3c4b..aa931dc 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -100,6 +100,8 @@
 
 config("glslang_hlsl") {
   defines = [ "ENABLE_HLSL=1" ]
+
+  cflags = [ "-Wno-conversion" ]
 }
 
 template("glslang_sources_common") {
@@ -250,6 +252,12 @@
         "-Wno-ignored-qualifiers",
         "-Wno-implicit-fallthrough",
         "-Wno-inconsistent-missing-override",
+
+        # TODO(rosasco): Fuchsia-only flags
+        "-Wno-unused-variable",
+        "-Wno-unknown-warning-option",
+        "-Wno-extra-semi",
+
         "-Wno-missing-field-initializers",
         "-Wno-newline-eof",
         "-Wno-sign-compare",
@@ -258,6 +266,7 @@
         "-Wno-unused-variable",
       ]
     }
+
     if (is_win && !is_clang) {
       cflags = [
         "/wd4018",  # signed/unsigned mismatch
diff --git a/OWNERS b/OWNERS
new file mode 100644
index 0000000..166185a
--- /dev/null
+++ b/OWNERS
@@ -0,0 +1,4 @@
+jjosh@google.com
+liyl@google.com
+cfontas@google.com
+