diff -r 000000000000 -r 6474c204b198 layout/tools/layout-debug/chrome.manifest
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/layout/tools/layout-debug/chrome.manifest	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,2 @@
+content layoutdebug jar:layoutdebug.jar!/content/layoutdebug/
+locale layoutdebug en-US jar:layoutdebug.jar!/locale/en-US/layoutdebug/