diff -up chromium-79.0.3945.130/third_party/angle/BUILD.gn.fixme chromium-79.0.3945.130/third_party/angle/BUILD.gn
--- chromium-79.0.3945.130/third_party/angle/BUILD.gn.fixme	2020-02-05 15:50:58.810040419 -0500
+++ chromium-79.0.3945.130/third_party/angle/BUILD.gn	2020-02-05 15:52:03.720848822 -0500
@@ -228,6 +228,9 @@ config("angle_common_config") {
   if (is_android) {
     libs = [ "log" ]
   }
+  if (!is_clang) {
+    cflags_cc = [ "-std=c++17" ]
+  }
 }
 
 if (is_win && !angle_is_winuwp) {
diff -up chromium-79.0.3945.130/third_party/angle/src/common/PackedEnums.h.fixme chromium-79.0.3945.130/third_party/angle/src/common/PackedEnums.h
--- chromium-79.0.3945.130/third_party/angle/src/common/PackedEnums.h.fixme	2020-02-05 15:35:47.473867905 -0500
+++ chromium-79.0.3945.130/third_party/angle/src/common/PackedEnums.h	2020-02-05 15:36:30.362065300 -0500
@@ -85,8 +85,9 @@ class PackedEnumMap
         {
             // This horrible const_cast pattern is necessary to work around a constexpr limitation.
             // See https://stackoverflow.com/q/34199774/ . Note that it should be fixed with C++17.
-            const_cast<T &>(const_cast<const Storage &>(
-                mPrivateData)[static_cast<UnderlyingType>(it->first)]) = it->second;
+            // const_cast<T &>(const_cast<const Storage &>(
+            //    mPrivateData)[static_cast<UnderlyingType>(it->first)]) = it->second;
+            mPrivateData[static_cast<UnderlyingType>(it->first)] = it->second;
         }
     }