[epiphany] Require WebKitGTK+ 2.15.3

[Michael Catanzaro <mcatanzaro src gnome org>]

commit f9dec6e42f586289616008979a2067d88d2f2cb3
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Sun Jan 29 23:29:54 2017 -0600

    Require WebKitGTK+ 2.15.3
    
    For WebKitSecurityOrigin

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 2ea25c2..2768f4a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -96,7 +96,7 @@ LT_LIB_M
 
 GLIB_REQUIRED=2.46.0
 GTK_REQUIRED=3.22.0
-WEBKITGTK_REQUIRED=2.15.2
+WEBKITGTK_REQUIRED=2.15.3
 
 PKG_CHECK_MODULES([CAIRO], [cairo >= 1.2])
 PKG_CHECK_MODULES([GCR], [gcr-3 >= 3.5.5])