diff -r 000000000000 -r 6474c204b198 netwerk/base/src/nsStreamLoader.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/netwerk/base/src/nsStreamLoader.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,48 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nsStreamLoader_h__
+#define nsStreamLoader_h__
+
+#include "nsIStreamLoader.h"
+#include "nsCOMPtr.h"
+#include "mozilla/Attributes.h"
+
+class nsIRequest;
+
+class nsStreamLoader MOZ_FINAL : public nsIStreamLoader
+{
+public:
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSISTREAMLOADER
+  NS_DECL_NSIREQUESTOBSERVER
+  NS_DECL_NSISTREAMLISTENER
+
+  nsStreamLoader();
+  ~nsStreamLoader();
+
+  static nsresult
+  Create(nsISupports *aOuter, REFNSIID aIID, void **aResult);
+
+protected:
+  static NS_METHOD WriteSegmentFun(nsIInputStream *, void *, const char *,
+                                   uint32_t, uint32_t, uint32_t *);
+
+  // Utility method to free mData, if present, and update other state to
+  // reflect that no data has been allocated.
+  void ReleaseData();
+
+  nsCOMPtr<nsIStreamLoaderObserver> mObserver;
+  nsCOMPtr<nsISupports>             mContext;  // the observer's context
+  nsCOMPtr<nsIRequest>              mRequest;
+
+  uint8_t  *mData;      // buffer to accumulate incoming data
+  uint32_t  mAllocated; // allocated size of data buffer (we preallocate if
+                        //   contentSize is available)
+  uint32_t  mLength;    // actual length of data in buffer
+                        //   (must be <= mAllocated)
+};
+
+#endif // nsStreamLoader_h__