Tighten up Protocol.Network.ResourcePriority type usages

While https://crrev.com/c/5494342 fixed an incorrect enum,
there's room to deduplicate our usage.

Bug: 335099340
Change-Id: Icfa74020393ed177b630ad754db6e3fe658de059
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/5498950
Reviewed-by: Jack Franklin <[email protected]>
Auto-Submit: Paul Irish <[email protected]>
Commit-Queue: Jack Franklin <[email protected]>
diff --git a/front_end/panels/network/NetworkLogView.ts b/front_end/panels/network/NetworkLogView.ts
index aeb20df..cccabc9 100644
--- a/front_end/panels/network/NetworkLogView.ts
+++ b/front_end/panels/network/NetworkLogView.ts
@@ -676,8 +676,8 @@
   private static sortSearchValues(key: string, values: string[]): void {
     if (key === NetworkForward.UIFilter.FilterType.Priority) {
       values.sort((a, b) => {
-        const aPriority = (PerfUI.NetworkPriorities.uiLabelToNetworkPriority(a) as Protocol.Network.ResourcePriority);
-        const bPriority = (PerfUI.NetworkPriorities.uiLabelToNetworkPriority(b) as Protocol.Network.ResourcePriority);
+        const aPriority = PerfUI.NetworkPriorities.uiLabelToNetworkPriority(a);
+        const bPriority = PerfUI.NetworkPriorities.uiLabelToNetworkPriority(b);
         return PerfUI.NetworkPriorities.networkPriorityWeight(aPriority) -
             PerfUI.NetworkPriorities.networkPriorityWeight(bPriority);
       });