LRUCache::new -> LRUCache::default.

MozReview-Commit-ID: KouOaYTluRx

components/style/context.rs

@@ -546,7 +546,7 @@ impl<E: TElement> SelectorFlagsMap<E> {
     pub fn new() -> Self {
         SelectorFlagsMap {
             map: FnvHashMap::default(),
-            cache: LRUCache::new(),
+            cache: LRUCache::default(),
         }
     }
 

components/style/sharing/mod.rs

@@ -415,7 +415,7 @@ struct SharingCacheBase<Candidate> {
 impl<Candidate> Default for SharingCacheBase<Candidate> {
     fn default() -> Self {
         Self {
-            entries: LRUCache::new(),
+            entries: LRUCache::default(),
         }
     }
 }