diff -r 000000000000 -r 6474c204b198 security/manager/boot/src/nsEntropyCollector.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/security/manager/boot/src/nsEntropyCollector.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,36 @@
+/* -*- 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 nsEntropyCollector_h___
+#define nsEntropyCollector_h___
+
+#include "nsIEntropyCollector.h"
+#include "nsIBufEntropyCollector.h"
+#include "nsCOMPtr.h"
+
+#define NS_ENTROPYCOLLECTOR_CID \
+ { /* 34587f4a-be18-43c0-9112-b782b08c0add */       \
+  0x34587f4a, 0xbe18, 0x43c0,                       \
+ {0x91, 0x12, 0xb7, 0x82, 0xb0, 0x8c, 0x0a, 0xdd} }
+
+class nsEntropyCollector : public nsIBufEntropyCollector
+{
+  public:
+    nsEntropyCollector();
+    virtual ~nsEntropyCollector();
+
+    NS_DECL_THREADSAFE_ISUPPORTS
+    NS_DECL_NSIENTROPYCOLLECTOR
+    NS_DECL_NSIBUFENTROPYCOLLECTOR
+
+    enum { entropy_buffer_size = 1024 };
+
+  protected:
+    unsigned char mEntropyCache[entropy_buffer_size];
+    int32_t mBytesCollected;
+    unsigned char *mWritePointer;
+    nsCOMPtr<nsIEntropyCollector> mForwardTarget;
+};
+
+#endif /* !defined nsEntropyCollector_h__ */