1 files changed, 3 insertions, 10 deletions
diff --git a/Source/WebCore/fileapi/BlobURL.cpp b/Source/WebCore/fileapi/BlobURL.cpp
index 47ebe8d..5d79141 100644
--- a/Source/WebCore/fileapi/BlobURL.cpp
+++ b/Source/WebCore/fileapi/BlobURL.cpp
@@ -52,16 +52,6 @@ KURL BlobURL::createInternalURL()
     return createBlobURL("blobinternal://");
 }
 
-KURL BlobURL::getOrigin(const KURL& url)
-{
-    ASSERT(url.protocolIs(kBlobProtocol));
-
-    unsigned startIndex = url.pathStart();
-    unsigned afterEndIndex = url.pathAfterLastSlash();
-    String origin = url.string().substring(startIndex, afterEndIndex - startIndex);
-    return KURL(ParsedURLString, decodeURLEscapeSequences(origin));
-}
-
 String BlobURL::getIdentifier(const KURL& url)
 {
     ASSERT(url.protocolIs(kBlobProtocol));
@@ -72,6 +62,9 @@ String BlobURL::getIdentifier(const KURL& url)
 
 KURL BlobURL::createBlobURL(const String& originString)
 {
+    ASSERT(!originString.isEmpty());
+    if (originString == "null")
+        return KURL();
     String urlString = kBlobProtocol;
     urlString += ":";
     urlString += encodeWithURLEscapeSequences(originString);