Revert "Revert "Upgrade to 5.0.71.48"" DO NOT MERGE
This reverts commit f2e3994fa5148cc3d9946666f0b0596290192b0e,
and updates the x64 makefile properly so it doesn't break that
build.
FPIIM-449
Change-Id: Ib83e35bfbae6af627451c926a9650ec57c045605
(cherry picked from commit 109988c7ccb6f3fd1a58574fa3dfb88beaef6632)
diff --git a/build/args/bots/official.desktop/blimp-engine.gn b/build/args/bots/official.desktop/blimp-engine.gn
new file mode 100644
index 0000000..2554c37
--- /dev/null
+++ b/build/args/bots/official.desktop/blimp-engine.gn
@@ -0,0 +1,7 @@
+import("//build/args/blimp_engine.gn")
+
+# Use release build to improve engine performance, especially WebP encoding.
+is_debug = false
+
+# Turn on DCHECK to find bugs.
+dcheck_always_on = true