[gnome-continuous] Tag libwebp

[Emmanuele Bassi <ebassi src gnome org>]

commit cdca14c6a64157be6008ba7bad17aa46d233e603
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Wed Nov 1 11:35:12 2017 +0000

    Tag libwebp
    
    It seems the last tested version of libwebp is actually 0.6, not master.

 manifest.json |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/manifest.json b/manifest.json
index 6445d4d..2878a76 100644
--- a/manifest.json
+++ b/manifest.json
@@ -844,7 +844,9 @@
 
                {"src": "fd:geoclue"},
       
-                {"src": "git:https://chromium.googlesource.com/webm/libwebp"},
+                {"src": "git:https://chromium.googlesource.com/webm/libwebp";,
+                 "tag": "50d1a848bc56554af8413cfe681f94286a6371b3",
+                 "tag-reason": "Last known tested version for WebKitGtk"},
 
                {"src": "git:https://github.com/hunspell/hunspell.git";,
                  "tag": "2730ad3d32d839f439ba7f286e3600cd9294a978",