File chromium-fix_swiftshader.patch of Package chromium.openSUSE_Backports_SLE-15_Update

--- a/third_party/swiftshader/third_party/llvm-7.0/BUILD.gn	2018-12-05 21:16:54.000000000 +0100
+++ b/third_party/swiftshader/third_party/llvm-7.0/BUILD.gn	2018-12-12 22:18:05.807964026 +0100
@@ -70,7 +70,6 @@ config("swiftshader_llvm_private_config"
     "-Wno-unused-private-field",
     "-Wno-unused-result",
     "-Wno-unused-variable",
-    "-Wno-error=header-hygiene",
   ]
 
   defines = [