Roll GN

gn/BUILD.gn

Index: gn/BUILD.gn
diff --git a/gn/BUILD.gn b/gn/BUILD.gn
index da627d730498790927fcaf01e0d8088abe596136..682986c4847bb4e9cb4e00c60cdebc26617c7388 100644
--- a/gn/BUILD.gn
+++ b/gn/BUILD.gn
@@ -117,10 +117,6 @@ config("executable") {
   }
 }
 
-pool("link_pool") {
-  depth = 0  #unlimited
-}
-
 toolchain("gcc_like") {
   lib_switch = "-l"
   lib_dir_switch = "-L"
@@ -182,7 +178,6 @@ toolchain("gcc_like") {
     output_prefix = "lib"
     default_output_extension = ".so"
     description = "$compiler_prefix $cxx -shared ... -o {{output}}"
-    pool = ":link_pool"
   }
 
   tool("link") {
@@ -191,7 +186,6 @@ toolchain("gcc_like") {
       "{{root_out_dir}}/{{target_output_name}}{{output_extension}}",
     ]
     description = "$compiler_prefix $cxx ... -o {{output}}"
-    pool = ":link_pool"
   }
 
   tool("stamp") {