Simplify protocal name and port comparison

Source/platform/weborigin/KnownPorts.cpp

Index: Source/platform/weborigin/KnownPorts.cpp
diff --git a/Source/platform/weborigin/KnownPorts.cpp b/Source/platform/weborigin/KnownPorts.cpp
index 71499a5120c0c30971113663f74560f12173b096..b289ef258891c62030bfa5cd626009e1ea196df3 100644
--- a/Source/platform/weborigin/KnownPorts.cpp
+++ b/Source/platform/weborigin/KnownPorts.cpp
@@ -40,15 +40,16 @@ bool isDefaultPortForProtocol(unsigned short port, const String& protocol)
     if (protocol.isEmpty())
         return false;
 
-    typedef HashMap<String, unsigned, CaseFoldingHash> DefaultPortsMap;
-    AtomicallyInitializedStaticReference(DefaultPortsMap, defaultPorts, new DefaultPortsMap());
-    if (defaultPorts.isEmpty()) {
-        defaultPorts.set("http", 80);
-        defaultPorts.set("https", 443);
-        defaultPorts.set("ftp", 21);
-        defaultPorts.set("ftps", 990);
-    }
-    return defaultPorts.get(protocol) == port;
+    if (protocol == "http")
+        return port == 80;
+    if (protocol == "https")
+        return port == 443;
+    if (protocol == "ftp")
+        return port == 21;
+    if (protocol == "ftps")
+        return port == 990;

[kinuko, 2015/02/03 03:52:32]

Switching on port number, and then comparing protocol might be slightly faster?

[Ian Wen, 2015/02/03 19:08:54]

Indeed. Done.

+
+    return false;
 }
 
 bool portAllowed(const KURL& url)