Do not normalize into NFC the values of form fields

Source/core/fileapi/BlobBuilder.cpp

Index: Source/core/fileapi/BlobBuilder.cpp
diff --git a/Source/core/fileapi/BlobBuilder.cpp b/Source/core/fileapi/BlobBuilder.cpp
index 039c8af3114a82d3a507adc868bfbadcd9ba8741..dfd1562246b568e913bc02647a3ea3dafa1fc863 100644
--- a/Source/core/fileapi/BlobBuilder.cpp
+++ b/Source/core/fileapi/BlobBuilder.cpp
@@ -60,7 +60,7 @@ Vector<char>& BlobBuilder::getBuffer()
 
 void BlobBuilder::append(const String& text, const String& endingType)
 {
-    CString utf8Text = UTF8Encoding().encode(text, WTF::EntitiesForUnencodables);
+    CString utf8Text = UTF8Encoding().normalizeAndEncode(text, WTF::EntitiesForUnencodables);
 
     Vector<char>& buffer = getBuffer();
     size_t oldSize = buffer.size();