[ozone/wayland] Change kImmedVerstion to 2

create_immed is available since protocol version 2. Exo is at version 2.
This method implicitly enables committing a frame of buffers atomically.

Change-Id: I46c25af1e257dbef68cc3c810a87ba2dd10b26ca
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2381652
Commit-Queue: Kramer Ge <fangzhoug@chromium.org>
Reviewed-by: Maksim Sisov (GMT+3) <msisov@igalia.com>
Cr-Commit-Position: refs/heads/master@{#802879}

ui/ozone/platform/wayland/host/wayland_zwp_linux_dmabuf.cc

@@ -12,10 +12,6 @@
 
 namespace ui {
 
-namespace {
-constexpr uint32_t kImmedVerstion = 3;
-}
-
 WaylandZwpLinuxDmabuf::WaylandZwpLinuxDmabuf(
     zwp_linux_dmabuf_v1* zwp_linux_dmabuf,
     WaylandConnection* connection)
@@ -56,8 +52,9 @@ void WaylandZwpLinuxDmabuf::CreateBuffer(base::ScopedFD fd,
   }
 
   // It's possible to avoid waiting until the buffer is created and have it
-  // immediately. This method is only available since the protocol version 3.
-  if (wl::get_version_of_object(zwp_linux_dmabuf_.get()) >= kImmedVerstion) {
+  // immediately. This method is only available since the protocol version 2.
+  if (wl::get_version_of_object(zwp_linux_dmabuf_.get()) >=
+      ZWP_LINUX_BUFFER_PARAMS_V1_CREATE_IMMED_SINCE_VERSION) {
     wl::Object<wl_buffer> buffer(zwp_linux_buffer_params_v1_create_immed(
         params, size.width(), size.height(), format, 0));
     std::move(callback).Run(std::move(buffer));