[iOS] Cleanup URLRequest load flags

This CL cleans up the load flags:
- removes LOAD_VERIFY_EV_CERT, as this feature has been disabled
- cleans up cache flags to catch future changes in the OS enum

There should be no user-visible changes.

BUG=409055

Review URL: https://codereview.chromium.org/1278743002

Cr-Commit-Position: refs/heads/master@{#342313}

1 files changed, 3 insertions, 4 deletions

diff --git a/ios/net/crn_http_protocol_handler.mm b/ios/net/crn_http_protocol_handler.mm
index 189861c..1638eab 100644
--- a/ios/net/crn_http_protocol_handler.mm
+++ b/ios/net/crn_http_protocol_handler.mm
@@ -583,9 +583,8 @@ void HttpProtocolHandlerCore::Destruct(const HttpProtocolHandlerCore* x) {
 
 void HttpProtocolHandlerCore::SetLoadFlags() {
   DCHECK(thread_checker_.CalledOnValidThread());
+  int load_flags = LOAD_NORMAL;
 
-  int load_flags = LOAD_VERIFY_EV_CERT;
-  // TODO(droger) Support MAIN_FRAME and SUB_FRAME flags.
   if (![request_ HTTPShouldHandleCookies])
     load_flags |= LOAD_DO_NOT_SEND_COOKIES | LOAD_DO_NOT_SAVE_COOKIES;
 
@@ -625,8 +624,8 @@ void HttpProtocolHandlerCore::SetLoadFlags() {
       case NSURLRequestReloadRevalidatingCacheData:
         load_flags |= LOAD_VALIDATE_CACHE;
         break;
-      default:
-        // For the NSURLRequestUseProtocolCachePolicy case.
+      case NSURLRequestUseProtocolCachePolicy:
+        // Do nothing, normal load.
         break;
     }
   }