Shrink chrome_elf.dll by switching source_sets to static_library

build/linux/unbundle/yasm.gn

Index: build/linux/unbundle/yasm.gn
diff --git a/build/linux/unbundle/yasm.gn b/build/linux/unbundle/yasm.gn
index a244bf02d7adaa0a2e55590c2ad82af185ff4821..b5b440e66faf5e6eb00bdadf5b4c6cfa3d23b2d1 100644
--- a/build/linux/unbundle/yasm.gn
+++ b/build/linux/unbundle/yasm.gn
@@ -88,7 +88,7 @@ template("yasm_assemble") {
   # Gather the .o files into a linkable thing. This doesn't actually link
   # anything (a source set just compiles files to link later), but will pass
   # the object files generated by the action up the dependency chain.
-  source_set(source_set_name) {
+  static_library(source_set_name) {
     if (defined(invoker.visibility)) {
       visibility = invoker.visibility
     }