Remove root out dir causing build problems

...with std <version> vs generated file version

browser/extensions/brave_extensions_browser_api_provider.cc

@@ -8,7 +8,7 @@
 #include "extensions/browser/extension_function_registry.h"
 
 // TOOD: I don't know why this isn't automatically linked in
-#include "gen/brave/common/extensions/api/generated_api_registration.cc"
+#include "../gen/brave/common/extensions/api/generated_api_registration.cc"
 
 namespace extensions {
 

build/BUILD.gn

@@ -3,7 +3,6 @@ import("//brave/build/config.gni")
 # Changing these will cause a full rebuild
 brave_include_dirs_ = [
   "//brave/chromium_src",
-  root_out_dir,
 ]
 
 if (brave_chromium_build) {

chromium_src/chrome/grit/chrome_unscaled_resources.h

@@ -1,2 +1,2 @@
 #include "brave/grit/brave_unscaled_resources.h"
-#include "gen/chrome/grit/chrome_unscaled_resources.h"
+#include "../gen/chrome/grit/chrome_unscaled_resources.h"

chromium_src/chrome/grit/generated_resources.h

@@ -1,2 +1,2 @@
 #include "brave/grit/brave_generated_resources.h"
-#include "gen/chrome/grit/generated_resources.h"
+#include "../gen/chrome/grit/generated_resources.h"

chromium_src/chrome/grit/theme_resources.h

@@ -1,2 +1,2 @@
 #include "brave/grit/brave_theme_resources.h"
-#include "gen/chrome/grit/theme_resources.h"
+#include "../gen/chrome/grit/theme_resources.h"