Add some licensing comments under chrome/.

BUG=28291

Review URL: http://codereview.chromium.org/507067

Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: fe1aceb5d5d27cded352616bf47379fe4afa50b6
diff --git a/README.chromium b/README.chromium
index 1adda18..8f036bf 100644
--- a/README.chromium
+++ b/README.chromium
@@ -6,8 +6,8 @@
 
 How to update:
 
-0) remove all the files from this dir, but keep README.chromium
+0) remove all the files from this dir, but keep README.chromium and LICENSE
 1) pull new version from git://github.com/antonm/dromaeo.git into a separate
 directory;
 2) run 'make web' to build standalone version;
-4) copy all the files from web dir into this directory.
+3) copy all the files from web dir into this directory.