[net] Change order of RequestPriority to natural: higher > lower

net/base/request_priority.h

Index: net/base/request_priority.h
diff --git a/net/base/request_priority.h b/net/base/request_priority.h
index ca7a1ec509f99bf2062f714776781b09796bee55..ff4bfe5b5528d79dccd98c68ca093cd2f73f3abc 100644
--- a/net/base/request_priority.h
+++ b/net/base/request_priority.h
@@ -11,11 +11,12 @@ namespace net {
 // Prioritization used in various parts of the networking code such
 // as connection prioritization and resource loading prioritization.
 enum RequestPriority {
-  HIGHEST = 0,   // 0 must be the highest priority.
-  MEDIUM,
-  LOW,
+  MINIMUM_PRIORITY = 0,
+  IDLE = 0,
   LOWEST,
-  IDLE,
+  LOW,
+  MEDIUM,
+  HIGHEST,
   NUM_PRIORITIES,
 };