Elide lifetimes where possible after rustup (#34824)

The new version of rust allows us to elide some lifetimes and clippy is
now complaining about this. This change elides them where possible and
removes the clippy exceptions.

Fixes #34804.

Signed-off-by: Martin Robinson <mrobinson@igalia.com>

components/canvas/canvas_data.rs

@@ -136,7 +136,7 @@ struct PathBuilderRef<'a> {
     transform: Transform2D<f32>,
 }
 
-impl<'a> PathBuilderRef<'a> {
+impl PathBuilderRef<'_> {
     fn line_to(&mut self, pt: &Point2D<f32>) {
         let pt = self.transform.transform_point(*pt);
         self.builder.line_to(pt);
@@ -238,7 +238,7 @@ struct UnshapedTextRun<'a> {
     string: &'a str,
 }
 
-impl<'a> UnshapedTextRun<'a> {
+impl UnshapedTextRun<'_> {
     fn script_and_font_compatible(&self, script: Script, other_font: &Option<FontRef>) -> bool {
         if self.script != script {
             return false;
@@ -1417,7 +1417,7 @@ impl<'a> CanvasData<'a> {
     }
 }
 
-impl<'a> Drop for CanvasData<'a> {
+impl Drop for CanvasData<'_> {
     fn drop(&mut self) {
         let mut updates = vec![];
         if let Some(image_key) = self.old_image_key.take() {

components/canvas/lib.rs

@@ -3,7 +3,6 @@
  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
 #![deny(unsafe_code)]
-#![allow(clippy::needless_lifetimes)]
 
 mod raqote_backend;
 

components/canvas/raqote_backend.rs

@@ -118,7 +118,7 @@ pub enum Pattern<'a> {
     Surface(SurfacePattern<'a>),
 }
 
-impl<'a> Pattern<'a> {
+impl Pattern<'_> {
     fn set_transform(&mut self, transform: Transform2D<f32>) {
         match self {
             Pattern::Surface(pattern) => pattern.set_transform(transform),

components/canvas/webgl_limits.rs

@@ -233,7 +233,7 @@ macro_rules! create_fun {
     };
 }
 
-impl<'a> GLExt for &'a Gl {
+impl GLExt for &Gl {
     create_fun!(
         try_get_integer,
         get_integer,

components/canvas/webxr.rs

@@ -310,7 +310,7 @@ pub(crate) struct WebXRBridgeContexts<'a> {
     pub(crate) bound_context_id: &'a mut Option<WebGLContextId>,
 }
 
-impl<'a> WebXRContexts<WebXRSurfman> for WebXRBridgeContexts<'a> {
+impl WebXRContexts<WebXRSurfman> for WebXRBridgeContexts<'_> {
     fn context(&mut self, device: &Device, context_id: WebXRContextId) -> Option<&mut Context> {
         let data = WebGLThread::make_current_if_needed_mut(
             device,