build libjpeg-turbo with -DUSE_CLZ_INTRINSIC

Otherwise it falls back on a 64K table.

Change-Id: I871fdfd9ef22ba7f3df758272b7dc557f217d5e0
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/261942
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
diff --git a/third_party/libjpeg-turbo/BUILD.gn b/third_party/libjpeg-turbo/BUILD.gn
index 218505b..c88325f 100644
--- a/third_party/libjpeg-turbo/BUILD.gn
+++ b/third_party/libjpeg-turbo/BUILD.gn
@@ -21,6 +21,9 @@
     ]
 
     defines = [ "TURBO_FOR_WINDOWS" ]
+    if (!is_win || is_clang) {
+      defines += [ "USE_CLZ_INTRINSIC" ]  # Cuts a 64K table.
+    }
 
     sources = [
       "../externals/libjpeg-turbo/jaricom.c",