Fixup for: [Backport] Security bug 1062941

Do not make the build believe it is using clang on Windows.

Change-Id: I7916c361d34b4d6d12bf885329b38103709e274e
Reviewed-by: Jüri Valdmann <[email protected]>

Author: mibrunin

chromium/third_party/libyuv/BUILD.gn

@@ -6,6 +6,7 @@
 # in the file PATENTS. All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
+import("//build/config/features.gni")
 import("//testing/test.gni")
 import("libyuv.gni")
 
@@ -49,7 +50,7 @@ group("libyuv") {
   all_dependent_configs = [ ":libyuv_config" ]
   deps = []
 
-  if (is_win && target_cpu == "x64") {
+  if (is_win && target_cpu == "x64" && !use_qt) {
     # Compile with clang in order to get inline assembly
     public_deps = [ ":libyuv_internal(//build/toolchain/win:win_clang_x64)" ]
   } else {