exo: Implement v6 of touch protocol including shape and frame event

components/exo/wayland/server.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/exo/wayland/server.h"
 
 #include <grp.h>
 #include <linux/input.h>
 #include <stddef.h>
 #include <stdint.h>
@@ skipping 2376 matching lines @@
   void OnTouchDown(Surface* surface,
                    base::TimeTicks time_stamp,
                    int id,
                    const gfx::Point& location) override {
     wl_resource* surface_resource = GetSurfaceResource(surface);
     DCHECK(surface_resource);
     wl_touch_send_down(touch_resource_, next_serial(),
                        TimeTicksToMilliseconds(time_stamp), surface_resource,
                        id, wl_fixed_from_int(location.x()),
                        wl_fixed_from_int(location.y()));
-    wl_client_flush(client());
   }
   void OnTouchUp(base::TimeTicks time_stamp, int id) override {
     wl_touch_send_up(touch_resource_, next_serial(),
                      TimeTicksToMilliseconds(time_stamp), id);
-    wl_client_flush(client());
   }
   void OnTouchMotion(base::TimeTicks time_stamp,
                      int id,
                      const gfx::Point& location) override {
     wl_touch_send_motion(touch_resource_, TimeTicksToMilliseconds(time_stamp),
                          id, wl_fixed_from_int(location.x()),
                          wl_fixed_from_int(location.y()));
+  }
+  void OnTouchShape(int id, float major, float minor) override {
+    if (wl_resource_get_version(touch_resource_) >=
+        WL_TOUCH_SHAPE_SINCE_VERSION) {
+      wl_touch_send_shape(touch_resource_, id, wl_fixed_from_double(major),
+                          wl_fixed_from_double(minor));
+    }
+  }
+  void OnTouchFrame() override {
+    if (wl_resource_get_version(touch_resource_) >=
+        WL_TOUCH_FRAME_SINCE_VERSION) {
+      wl_touch_send_frame(touch_resource_);
+    }
     wl_client_flush(client());
   }
   void OnTouchCancel() override {
     wl_touch_send_cancel(touch_resource_);
-    wl_client_flush(client());
   }
 
  private:
   // The client who own this touch instance.
   wl_client* client() const { return wl_resource_get_client(touch_resource_); }
 
   // Returns the next serial to use for keyboard events.
   uint32_t next_serial() const {
     return wl_display_next_serial(wl_client_get_display(client()));
   }
@@ skipping 775 matching lines @@
   DCHECK(event_loop);
   wl_event_loop_dispatch(event_loop, timeout.InMilliseconds());
 }
 
 void Server::Flush() {
   wl_display_flush_clients(wl_display_.get());
 }
 
 }  // namespace wayland
 }  // namespace exo