Revert "Create errors (especially cancellation errors) internally to WebCore, rather"

Source/Platform/chromium/src/Platform.cpp

Index: Source/Platform/chromium/src/Platform.cpp
diff --git a/Source/Platform/chromium/src/Platform.cpp b/Source/Platform/chromium/src/Platform.cpp
index 45238aafea4e398969ddf346325e2c2506bf8e42..29eebd97dacdd199a113d647216ee472901349fc 100644
--- a/Source/Platform/chromium/src/Platform.cpp
+++ b/Source/Platform/chromium/src/Platform.cpp
@@ -31,8 +31,6 @@
 #include "config.h"
 #include <public/Platform.h>
 
-#include <public/WebURLError.h>
-
 namespace WebKit {
 
 static Platform* s_platform = 0;
@@ -52,12 +50,4 @@ Platform* Platform::current()
     return s_platform;
 }
 
-WebURLError Platform::cancelledError(const WebURL& unreachableURL) const
-{
-    WebURLError error;
-    error.unreachableURL = unreachableURL;
-    error.isCancellation = true;
-    return error;
-}
-
 } // namespace WebKit