Update xdg-shell protocol file

Update xdb-shell.xml file to one from tag v1.9.0
in qtwebengine-protocols.git. This includes switch to
MIT license, and also some doc updates.

Change-Id: Ia4a565d73f2b25f8a2c41d0cde4c48ac5a793279
Reviewed-by: Johan Helsing <johan.helsing@qt.io>

src/3rdparty/wayland/protocols/xdg-shell.xml

@@ -7,26 +7,24 @@
     Copyright © 2013      Jasper St. Pierre
     Copyright © 2010-2013 Intel Corporation
 
-    Permission to use, copy, modify, distribute, and sell this
+    Permission is hereby granted, free of charge, to any person obtaining a
-    software and its documentation for any purpose is hereby granted
+    copy of this software and associated documentation files (the "Software"),
-    without fee, provided that the above copyright notice appear in
+    to deal in the Software without restriction, including without limitation
-    all copies and that both that copyright notice and this permission
+    the rights to use, copy, modify, merge, publish, distribute, sublicense,
-    notice appear in supporting documentation, and that the name of
+    and/or sell copies of the Software, and to permit persons to whom the
-    the copyright holders not be used in advertising or publicity
+    Software is furnished to do so, subject to the following conditions:
-    pertaining to distribution of the software without specific,
-    written prior permission.  The copyright holders make no
-    representations about the suitability of this software for any
-    purpose.  It is provided "as is" without express or implied
-    warranty.
 
-    THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
+    The above copyright notice and this permission notice (including the next
-    SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+    paragraph) shall be included in all copies or substantial portions of the
-    FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
+    Software.
-    SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+
-    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-    AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-    ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
-    THIS SOFTWARE.
+    THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+    FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+    DEALINGS IN THE SOFTWARE.
   </copyright>
 
   <interface name="xdg_shell" version="1">
@@ -248,10 +246,19 @@
 	Start an interactive, user-driven move of the surface.
 
 	This request must be used in response to some sort of user action
-	like a button press, key press, or touch down event.
+	like a button press, key press, or touch down event. The passed
+	serial is used to determine the type of interactive move (touch,
+	pointer, etc).
 
 	The server may ignore move requests depending on the state of
-	the surface (e.g. fullscreen or maximized).
+	the surface (e.g. fullscreen or maximized), or if the passed serial
+	is no longer valid.
+
+	If triggered, the surface will lose the focus of the device
+	(wl_pointer, wl_touch, etc) used for the move. It is up to the
+	compositor to visually indicate that the move is taking place, such as
+	updating a pointer cursor, during the move. There is no guarantee
+	that the device focus will return when the move is completed.
       </description>
       <arg name="seat" type="object" interface="wl_seat" summary="the wl_seat of the user event"/>
       <arg name="serial" type="uint" summary="the serial of the user event"/>
@@ -260,9 +267,7 @@
     <enum name="resize_edge">
       <description summary="edge values for resizing">
 	These values are used to indicate which edge of a surface
-	is being dragged in a resize operation. The server may
+	is being dragged in a resize operation.
-	use this information to adapt its behavior, e.g. choose
-	an appropriate cursor image.
       </description>
       <entry name="none" value="0"/>
       <entry name="top" value="1"/>
@@ -280,10 +285,33 @@
 	Start a user-driven, interactive resize of the surface.
 
 	This request must be used in response to some sort of user action
-	like a button press, key press, or touch down event.
+	like a button press, key press, or touch down event. The passed
+	serial is used to determine the type of interactive resize (touch,
+	pointer, etc).
 
 	The server may ignore resize requests depending on the state of
 	the surface (e.g. fullscreen or maximized).
+
+	If triggered, the client will receive configure events with the
+	"resize" state enum value and the expected sizes. See the "resize"
+	enum value for more details about what is required. The client
+	must also acknowledge configure events using "ack_configure". After
+	the resize is completed, the client will receive another "configure"
+	event without the resize state.
+
+	If triggered, the surface also will lose the focus of the device
+	(wl_pointer, wl_touch, etc) used for the resize. It is up to the
+	compositor to visually indicate that the resize is taking place,
+	such as updating a pointer cursor, during the resize. There is no
+	guarantee that the device focus will return when the resize is
+	completed.
+
+	The edges parameter specifies how the surface should be resized,
+	and is one of the values of the resize_edge enum. The compositor
+	may use this information to update the surface position for
+	example when dragging the top left corner. The compositor may also
+	use this information to adapt its behavior, e.g. choose an
+	appropriate cursor image.
       </description>
       <arg name="seat" type="object" interface="wl_seat" summary="the wl_seat of the user event"/>
       <arg name="serial" type="uint" summary="the serial of the user event"/>