Fix BUILD.gn on windows for symbol_level=0

`gn gen` failed due to missing pdb files.

This is follwup of
https://chromium-review.googlesource.com/c/1279380

TBR: wfh@chromium.org thestig@chromium.org
Change-Id: I513d10d61a3868953c4afc025adf840e0f3c70c2
Reviewed-on: https://chromium-review.googlesource.com/c/1286108
Commit-Queue: Takuto Ikuta <tikuta@chromium.org>
Reviewed-by: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#600636}

cloud_print/virtual_driver/win/port_monitor/BUILD.gn

@@ -70,17 +70,19 @@ if (current_cpu == "x64") {
 
   gcp_portmon64_out_dir = get_label_info(gcp_portmon64_label, "root_out_dir")
 
-  copy("copy_gcp_portmon_pdb") {
-    visibility = [ ":copy_gcp_portmon_dll" ]
-    sources = [
-      "$gcp_portmon64_out_dir/gcp_portmon64.dll.pdb",
-    ]
-    outputs = [
-      "$root_out_dir/{{source_file_part}}",
-    ]
-    deps = [
-      gcp_portmon64_label,
-    ]
+  if (symbol_level > 0) {
+    copy("copy_gcp_portmon_pdb") {
+      visibility = [ ":copy_gcp_portmon_dll" ]
+      sources = [
+        "$gcp_portmon64_out_dir/gcp_portmon64.dll.pdb",
+      ]
+      outputs = [
+        "$root_out_dir/{{source_file_part}}",
+      ]
+      deps = [
+        gcp_portmon64_label,
+      ]
+    }
   }
   copy("copy_gcp_portmon_dll") {
     sources = [

courgette/BUILD.gn

@@ -188,17 +188,19 @@ if (!is_ios) {
 
       courgette64_out_dir = get_label_info(courgette64_label, "root_out_dir")
 
-      copy("copy_courgette_pdb") {
-        visibility = [ ":copy_courgette_binaries" ]
-        sources = [
-          "$courgette64_out_dir/courgette64.exe.pdb",
-        ]
-        outputs = [
-          "$root_out_dir/{{source_file_part}}",
-        ]
-        deps = [
-          courgette64_label,
-        ]
+      if (symbol_level > 0) {
+        copy("copy_courgette_pdb") {
+          visibility = [ ":copy_courgette_binaries" ]
+          sources = [
+            "$courgette64_out_dir/courgette64.exe.pdb",
+          ]
+          outputs = [
+            "$root_out_dir/{{source_file_part}}",
+          ]
+          deps = [
+            courgette64_label,
+          ]
+        }
       }
 
       copy("copy_courgette_binaries") {