1 files changed, 4 insertions, 6 deletions
diff --git a/dom/file/BaseBlobImpl.h b/dom/file/BaseBlobImpl.h
index 7265fc2104..860421c56a 100644
--- a/dom/file/BaseBlobImpl.h
+++ b/dom/file/BaseBlobImpl.h
@@ -8,6 +8,7 @@
 #define mozilla_dom_BaseBlobImpl_h
 
 #include "nsIGlobalObject.h"
+#include "mozilla/dom/Blob.h"
 #include "mozilla/dom/BlobImpl.h"
 #include "mozilla/ErrorResult.h"
 
@@ -29,8 +30,7 @@ class BaseBlobImpl : public BlobImpl {
         mLength(aLength),
         mSerialNumber(NextSerialNumber()),
         mLastModificationDate(aLastModifiedDate) {
-    // Ensure non-null mContentType by default
-    mContentType.SetIsVoid(false);
+    dom::Blob::MakeValidBlobType(mContentType);
   }
 
   // Blob constructor without starting point.
@@ -41,8 +41,7 @@ class BaseBlobImpl : public BlobImpl {
         mLength(aLength),
         mSerialNumber(NextSerialNumber()),
         mLastModificationDate(0) {
-    // Ensure non-null mContentType by default
-    mContentType.SetIsVoid(false);
+    dom::Blob::MakeValidBlobType(mContentType);
   }
 
   // Blob constructor with starting point.
@@ -53,8 +52,7 @@ class BaseBlobImpl : public BlobImpl {
         mLength(aLength),
         mSerialNumber(NextSerialNumber()),
         mLastModificationDate(0) {
-    // Ensure non-null mContentType by default
-    mContentType.SetIsVoid(false);
+    dom::Blob::MakeValidBlobType(mContentType);
   }
 
   void GetName(nsAString& aName) const override;