[gnome-build-meta] Update to WebKitGTK 2.25.92

[Michael Catanzaro <mcatanzaro src gnome org>]

commit a2df47c5daeb4ea542b975de3d093a1299b459d1
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Wed Sep 4 15:52:36 2019 -0500

    Update to WebKitGTK 2.25.92
    
    RIP WebKitPluginProcessGtk2

 elements/sdk/WebKitGTK.bst | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
---
diff --git a/elements/sdk/WebKitGTK.bst b/elements/sdk/WebKitGTK.bst
index e099cef9..2d6a55d2 100644
--- a/elements/sdk/WebKitGTK.bst
+++ b/elements/sdk/WebKitGTK.bst
@@ -1,7 +1,7 @@
 kind: cmake
 sources:
 - kind: tar
-  url: webkitgtk_org:webkitgtk-2.25.4.tar.xz
+  url: webkitgtk_org:webkitgtk-2.25.92.tar.xz
 - kind: patch
   path: files/webkitgtk/gtk-doc-introspection-cross-compiling.patch
 - kind: local
@@ -63,7 +63,6 @@ variables:
         webkitgtk_toolchain: -DCMAKE_BUILD_TYPE=Release -DCMAKE_TOOLCHAIN_FILE=toolchain.%{arch}
   cmake-local:
     -DPORT=GTK
-    -DENABLE_PLUGIN_PROCESS_GTK2=OFF
     -DENABLE_BUBBLEWRAP_SANDBOX=OFF
     %{webkitgtk_toolchain}
 (?):