Don't build glmark2_wgl on Windows ARM64 due to missing opengl32.lib

Opengl32.lib/opengl32.dll are not available on Windows ARM64. Disable building
glmard2_wgl which depends them.

Bug: chromium:941621

Change-Id: Iddae231764c6135ef1a74c294da1393f0fe51eeb
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1522353
Reviewed-by: Jamie Madill <jmadill@chromium.org>
diff --git a/src/tests/BUILD.gn b/src/tests/BUILD.gn
index 6c13212..71979b5 100644
--- a/src/tests/BUILD.gn
+++ b/src/tests/BUILD.gn
@@ -279,7 +279,7 @@
     if (is_win || is_linux) {
       data_deps += [ "${angle_root}/third_party/glmark2:glmark2_angle" ]
     }
-    if (is_win) {
+    if (is_win && target_cpu != "arm64") {
       data_deps += [ "${angle_root}/third_party/glmark2:glmark2_wgl" ]
     }
     if (is_linux) {
diff --git a/third_party/glmark2/BUILD.gn b/third_party/glmark2/BUILD.gn
index 41c7c4a..e162dec 100644
--- a/third_party/glmark2/BUILD.gn
+++ b/third_party/glmark2/BUILD.gn
@@ -402,7 +402,8 @@
   }
 }
 
-if (is_win) {
+# opengl32.lib/opengl32.dll are not available on Windows ARM64.
+if (is_win && target_cpu != "arm64") {
   glmark2_exe("glmark2_wgl") {
     sources = [
       "src/src/gl-state-wgl.cpp",