diff -up chromium-53.0.2785.92/tools/gn/BUILD.gn.lastcommitfix chromium-53.0.2785.92/tools/gn/BUILD.gn
--- chromium-53.0.2785.92/tools/gn/BUILD.gn.lastcommitfix	2016-09-06 13:50:17.540459136 -0400
+++ chromium-53.0.2785.92/tools/gn/BUILD.gn	2016-09-06 13:50:27.380269110 -0400
@@ -259,7 +259,6 @@ executable("gn") {
 
   deps = [
     ":gn_lib",
-    ":last_commit_position",
     "//base",
     "//build/config/sanitizers:deps",
     "//build/win:default_exe_manifest",
diff -up chromium-53.0.2785.92/tools/gn/gn_main.cc.lastcommitfix chromium-53.0.2785.92/tools/gn/gn_main.cc
--- chromium-53.0.2785.92/tools/gn/gn_main.cc.lastcommitfix	2016-09-06 13:49:34.620288177 -0400
+++ chromium-53.0.2785.92/tools/gn/gn_main.cc	2016-09-06 13:49:47.316042652 -0400
@@ -12,13 +12,7 @@
 #include "tools/gn/standard_out.h"
 #include "tools/gn/switches.h"
 
-// Only the GN-generated build makes this header for now.
-// TODO(brettw) consider adding this if we need it in GYP.
-#if defined(GN_BUILD)
-#include "tools/gn/last_commit_position.h"
-#else
 #define LAST_COMMIT_POSITION "UNKNOWN"
-#endif
 
 namespace {