[epiphany] Load web extension from build root in developer mode

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 6ab3c7aa955aa1d1b34b647984f44617243b8082
Author: Michael Catanzaro <mcatanzaro igalia com>
Date:   Tue Apr 17 21:47:30 2018 -0500

    Load web extension from build root in developer mode
    
    This is the final step needed to make epiphany work when not installed.

 embed/ephy-embed-shell.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/embed/ephy-embed-shell.c b/embed/ephy-embed-shell.c
index ea929e3..65ef092 100644
--- a/embed/ephy-embed-shell.c
+++ b/embed/ephy-embed-shell.c
@@ -743,7 +743,11 @@ initialize_web_extensions (WebKitWebContext *web_context,
   gboolean browser_mode;
   const char *address;
 
+#if DEVELOPER_MODE
+  webkit_web_context_set_web_extensions_directory (web_context, BUILD_ROOT "/embed/web-extension");
+#else
   webkit_web_context_set_web_extensions_directory (web_context, EPHY_WEB_EXTENSIONS_DIR);
+#endif
 
   address = priv->dbus_server ? g_dbus_server_get_client_address (priv->dbus_server) : NULL;