Change gpu/ipc:command_buffer_sources to static_library

gpu/ipc/BUILD.gn

Index: gpu/ipc/BUILD.gn
diff --git a/gpu/ipc/BUILD.gn b/gpu/ipc/BUILD.gn
index 5c03cf515ff20781fd818fd5a5459e6391b377dd..61afbc6f518ef720848f667174a11adb8b775a6b 100644
--- a/gpu/ipc/BUILD.gn
+++ b/gpu/ipc/BUILD.gn
@@ -16,7 +16,12 @@ group("command_buffer") {
   }
 }
 
-source_set("command_buffer_sources") {
+if (is_component_build) {
+  link_target_type = "source_set"
+} else {
+  link_target_type = "static_library"
+}
+target(link_target_type, "command_buffer_sources") {
   visibility = [ "//gpu/*" ]
   sources = [
     "gpu_in_process_thread_service.cc",