Unify how a string literal is converted into a String

Author: badboy

glean-core/benchmark/benches/lifetime_buffering.rs

@@ -16,11 +16,11 @@ pub fn delay_io_benchmark(c: &mut Criterion) {
         let cfg = glean_core::InternalConfiguration {
             upload_enabled: true,
             data_path,
-            application_id: String::from("glean-bench"),
-            language_binding_name: String::from("rust"),
+            application_id: "glean-bench".into(),
+            language_binding_name: "rust".into(),
             max_events: None,
             delay_ping_lifetime_io: false,
-            app_build: String::from("1"),
+            app_build: "1".into(),
             use_core_mps: true,
             trim_data_to_registered_pings: true,
             log_level: None,
@@ -58,11 +58,11 @@ pub fn delay_io_benchmark(c: &mut Criterion) {
         let cfg = glean_core::InternalConfiguration {
             upload_enabled: true,
             data_path,
-            application_id: String::from("glean-bench"),
-            language_binding_name: String::from("rust"),
+            application_id: "glean-bench".into(),
+            language_binding_name: "rust".into(),
             max_events: None,
             delay_ping_lifetime_io: true,
-            app_build: String::from("1"),
+            app_build: "1".into(),
             use_core_mps: true,
             trim_data_to_registered_pings: true,
             log_level: None,
@@ -100,11 +100,11 @@ pub fn delay_io_benchmark(c: &mut Criterion) {
         let cfg = glean_core::InternalConfiguration {
             upload_enabled: true,
             data_path,
-            application_id: String::from("glean-bench"),
-            language_binding_name: String::from("rust"),
+            application_id: "glean-bench".into(),
+            language_binding_name: "rust".into(),
             max_events: None,
             delay_ping_lifetime_io: true,
-            app_build: String::from("1"),
+            app_build: "1".into(),
             use_core_mps: true,
             trim_data_to_registered_pings: true,
             log_level: None,