Update euclid.

There are a few canvas2d-related dependencies that haven't updated, but they
only use euclid internally so that's not blocking landing the rest of the
changes.

Given the size of this patch, I think it's useful to get this landed as-is.

components/script_layout_interface/Cargo.toml

@@ -16,7 +16,7 @@ atomic_refcell = "0.1"
 canvas_traits = {path = "../canvas_traits"}
 cssparser = "0.25"
 crossbeam-channel = "0.3"
-euclid = "0.19"
+euclid = "0.20"
 gfx_traits = {path = "../gfx_traits"}
 html5ever = "0.23"
 ipc-channel = "0.11"

components/script_layout_interface/message.rs

@@ -6,7 +6,7 @@ use crate::rpc::LayoutRPC;
 use crate::{OpaqueStyleAndLayoutData, PendingImage, TrustedNodeAddress};
 use app_units::Au;
 use crossbeam_channel::{Receiver, Sender};
-use euclid::{Point2D, Rect};
+use euclid::default::{Point2D, Rect};
 use gfx_traits::Epoch;
 use ipc_channel::ipc::{IpcReceiver, IpcSender};
 use metrics::PaintTimeMetrics;

components/script_layout_interface/rpc.rs

@@ -3,7 +3,7 @@
  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
 use app_units::Au;
-use euclid::Rect;
+use euclid::default::Rect;
 use script_traits::UntrustedNodeAddress;
 use servo_arc::Arc;
 use style::properties::ComputedValues;