Blob/File constructors/slice method shouldn't throw on invalid types

Source/core/fileapi/File.cpp

Index: Source/core/fileapi/File.cpp
diff --git a/Source/core/fileapi/File.cpp b/Source/core/fileapi/File.cpp
index fbf292c10436e4c076b6c38fae8449c71a7b0054..dd5a9ad873b758e9d6d17cb8b38d154c0c1246e6 100644
--- a/Source/core/fileapi/File.cpp
+++ b/Source/core/fileapi/File.cpp
@@ -91,10 +91,6 @@ static PassOwnPtr<BlobData> createBlobDataForFileSystemURL(const KURL& fileSyste
 File* File::create(const HeapVector<BlobOrStringOrArrayBufferViewOrArrayBuffer>& fileBits, const String& fileName, const FilePropertyBag& options, ExceptionState& exceptionState)
 {
     ASSERT(options.hasType());
-    if (!options.type().containsOnlyASCII()) {
-        exceptionState.throwDOMException(SyntaxError, "The 'type' property must consist of ASCII characters.");
-        return nullptr;
-    }
 
     double lastModified;
     if (options.hasLastModified())