[mutter] core: Add new unmaximize flag

[Olivier Fourdan <ofourdan src gnome org>]

commit 1139ace244b94e7007c7354d8872ddf694c9b29d
Author: Olivier Fourdan <ofourdan redhat com>
Date:   Wed Jun 21 11:30:09 2017 +0200

    core: Add new unmaximize flag
    
    Wayland clients know their size better, so for Wayland we'd rather not
    try to resize the client on un-maximize, but for this to work we need a
    new MetaMoveResizeFlags.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=783901

 src/core/window-private.h |   11 ++++++-----
 src/core/window.c         |    3 ++-
 2 files changed, 8 insertions(+), 6 deletions(-)
---
diff --git a/src/core/window-private.h b/src/core/window-private.h
index 196e8af..05c309e 100644
--- a/src/core/window-private.h
+++ b/src/core/window-private.h
@@ -74,11 +74,12 @@ typedef enum {
 typedef enum
 {
   META_MOVE_RESIZE_CONFIGURE_REQUEST = 1 << 0,
-  META_MOVE_RESIZE_USER_ACTION       = 1 << 1,
-  META_MOVE_RESIZE_MOVE_ACTION       = 1 << 2,
-  META_MOVE_RESIZE_RESIZE_ACTION     = 1 << 3,
-  META_MOVE_RESIZE_WAYLAND_RESIZE    = 1 << 4,
-  META_MOVE_RESIZE_STATE_CHANGED     = 1 << 5,
+  META_MOVE_RESIZE_USER_ACTION = 1 << 1,
+  META_MOVE_RESIZE_MOVE_ACTION = 1 << 2,
+  META_MOVE_RESIZE_RESIZE_ACTION = 1 << 3,
+  META_MOVE_RESIZE_WAYLAND_RESIZE = 1 << 4,
+  META_MOVE_RESIZE_STATE_CHANGED = 1 << 5,
+  META_MOVE_RESIZE_UNMAXIMIZE = 1 << 6,
 } MetaMoveResizeFlags;
 
 typedef enum
diff --git a/src/core/window.c b/src/core/window.c
index f664ef7..673887f 100644
--- a/src/core/window.c
+++ b/src/core/window.c
@@ -3317,7 +3317,8 @@ meta_window_unmaximize (MetaWindow        *window,
       meta_window_move_resize_internal (window,
                                         (META_MOVE_RESIZE_MOVE_ACTION |
                                          META_MOVE_RESIZE_RESIZE_ACTION |
-                                         META_MOVE_RESIZE_STATE_CHANGED),
+                                         META_MOVE_RESIZE_STATE_CHANGED |
+                                         META_MOVE_RESIZE_UNMAXIMIZE),
                                         NorthWestGravity,
                                         target_rect);