Allow generation of a chromium outdirs when enable_extensions=false

apps/BUILD.gn

Index: apps/BUILD.gn
diff --git a/apps/BUILD.gn b/apps/BUILD.gn
index fae99193fa0d25e67101b71bb21c38df9f150879..0b9f4aaf640f91fd4aac757a4a08e2867a576e0f 100644
--- a/apps/BUILD.gn
+++ b/apps/BUILD.gn
@@ -40,11 +40,16 @@ static_library("apps") {
       "//components/keyed_service/content",
       "//content/public/browser",
       "//content/public/common",
-      "//extensions/browser",
-      "//extensions/common",
-      "//extensions/common/api",
     ]
 
+    if (enable_extensions) {
+      deps += [
+        "//extensions/browser",
+        "//extensions/common",
+        "//extensions/common/api",
+      ]
+    }
+
     if (is_chromeos) {
       deps += [ "//components/user_manager" ]
     }