Convert plain C-style casts to use CFCastStrict and GetValueFromDictionary template

net/proxy/proxy_server_mac.cc

Index: net/proxy/proxy_server_mac.cc
diff --git a/net/proxy/proxy_server_mac.cc b/net/proxy/proxy_server_mac.cc
index 4df37a47b0b1a1b43e10056c1a78b58585fa6781..eebde544b8c31b8b5f09832041fbb44590dd4fec 100644
--- a/net/proxy/proxy_server_mac.cc
+++ b/net/proxy/proxy_server_mac.cc
@@ -24,9 +24,8 @@ ProxyServer ProxyServer::FromDictionary(Scheme scheme,
     return ProxyServer(scheme, HostPortPair());
   }
 
-  CFStringRef host_ref =
-      (CFStringRef)base::mac::GetValueFromDictionary(dict, host_key,
-                                                    CFStringGetTypeID());
+  CFStringRef host_ref = base::mac::GetValueFromDictionary<CFStringRef>(
+      dict, host_key);
   if (!host_ref) {
     LOG(WARNING) << "Could not find expected key "
                  << base::SysCFStringRefToUTF8(host_key)
@@ -35,9 +34,8 @@ ProxyServer ProxyServer::FromDictionary(Scheme scheme,
   }
   std::string host = base::SysCFStringRefToUTF8(host_ref);
 
-  CFNumberRef port_ref =
-      (CFNumberRef)base::mac::GetValueFromDictionary(dict, port_key,
-                                                    CFNumberGetTypeID());
+  CFNumberRef port_ref = base::mac::GetValueFromDictionary<CFNumberRef>(
+      dict, port_key);
   int port;
   if (port_ref) {
     CFNumberGetValue(port_ref, kCFNumberIntType, &port);