Make glean dependency optional for webrender

Author: mrobinson

Diff for: webrender/Cargo.toml

@@ -52,7 +52,7 @@ svg_fmt = "0.4"
 tracy-rs = "0.1.2"
 derive_more = { version = "0.99", default-features = false, features = ["add_assign"] }
 etagere = "0.2.6"
-glean = "57.0.0"
+glean = { version = "57.0.0", optional = true }
 firefox-on-glean = { version = "0.1.0", optional = true }
 swgl = { path = "../swgl", optional = true }
 topological-sort = "0.1"

Diff for: webrender/src/telemetry.rs

@@ -2,23 +2,27 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
+#[cfg(feature = "gecko")]
 use glean::TimerId;
 #[cfg(feature = "gecko")]
 use firefox_on_glean::metrics::wr;
 use std::time::Duration;
 
 pub struct Telemetry;
 
+#[cfg(not(feature = "gecko"))]
+pub struct TimerId;
+
 /// Defines the interface for hooking up an external telemetry reporter to WR.
 #[cfg(not(feature = "gecko"))]
 impl Telemetry {
     pub fn record_rasterize_blobs_time(_duration: Duration) { }
-    pub fn start_framebuild_time() -> TimerId { TimerId { id: 0 } }
+    pub fn start_framebuild_time() -> TimerId { TimerId { } }
     pub fn stop_and_accumulate_framebuild_time(_id: TimerId) { }
     pub fn record_renderer_time(_duration: Duration) { }
     pub fn record_renderer_time_no_sc(_duration: Duration) { }
     pub fn record_scenebuild_time(_duration: Duration) { }
-    pub fn start_sceneswap_time() -> TimerId { TimerId { id: 0 } }
+    pub fn start_sceneswap_time() -> TimerId { TimerId { } }
     pub fn stop_and_accumulate_sceneswap_time(_id: TimerId) { }
     pub fn cancel_sceneswap_time(_id: TimerId) { }
     pub fn record_texture_cache_update_time(_duration: Duration) { }