Remove the WEBCORE_NAVIGATOR_* defines

Source/core/frame/NavigatorID.cpp

Index: Source/core/frame/NavigatorID.cpp
diff --git a/Source/core/frame/NavigatorID.cpp b/Source/core/frame/NavigatorID.cpp
index 59d930acb08efe0e71dab0b182a789d04379ff69..681f341cb3bd09b2190facc0fc815bfea5642929 100644
--- a/Source/core/frame/NavigatorID.cpp
+++ b/Source/core/frame/NavigatorID.cpp
@@ -32,15 +32,11 @@
 #include "config.h"
 #include "core/frame/NavigatorID.h"
 
-#if !defined(WEBCORE_NAVIGATOR_PLATFORM) && OS(POSIX) && !OS(MACOSX)
+#if !OS(MACOSX) && !OS(WIN)
 #include "wtf/Threading.h"
 #include <sys/utsname.h>
 #endif
 
-#ifndef WEBCORE_NAVIGATOR_PRODUCT
-#define WEBCORE_NAVIGATOR_PRODUCT "Gecko"
-#endif // ifndef WEBCORE_NAVIGATOR_PRODUCT
-
 namespace blink {
 
 String NavigatorID::appCodeName()
@@ -62,9 +58,7 @@ String NavigatorID::appVersion()
 
 String NavigatorID::platform()
 {
-#if defined(WEBCORE_NAVIGATOR_PLATFORM)
-    return WEBCORE_NAVIGATOR_PLATFORM;
-#elif OS(MACOSX)
+#if OS(MACOSX)
     // Match Safari and Mozilla on Mac x86.
     return "MacIntel";
 #elif OS(WIN)
@@ -79,7 +73,7 @@ String NavigatorID::platform()
 
 String NavigatorID::product()
 {
-    return WEBCORE_NAVIGATOR_PRODUCT;
+    return "Gecko";
 }
 
 } // namespace blink