diff --git a/content/events/test/test_eventctors.html b/content/events/test/test_eventctors.html
index a2250055ada5..3c653a03abce 100644
--- a/content/events/test/test_eventctors.html
+++ b/content/events/test/test_eventctors.html
@@ -162,6 +162,47 @@ try {
 ok(ex, "Should have thrown an exception!");
 ex = false;
 
+// BlobEvent
+
+try {
+  e = new BlobEvent();
+} catch(exp) {
+  ex = true;
+}
+ok(ex, "First parameter is required!");
+ex = false;
+
+e = new BlobEvent("hello");
+ok(e.type, "hello", "Wrong event type!");
+ok(!e.isTrusted, "Event shouldn't be trusted!");
+ok(!e.bubbles, "Event shouldn't bubble!");
+ok(!e.cancelable, "Event shouldn't be cancelable!");
+document.dispatchEvent(e);
+is(receivedEvent, e, "Wrong event!");
+
+var blob = Blob();
+e = new BlobEvent("hello", { bubbles: true, cancelable: true, data: blob });
+ok(e.type, "hello", "Wrong event type!");
+ok(!e.isTrusted, "Event shouldn't be trusted!");
+ok(e.bubbles, "Event should bubble!");
+ok(e.cancelable, "Event should be cancelable!");
+is(e.data, blob , "Wrong event.data!");
+document.dispatchEvent(e);
+is(receivedEvent, e, "Wrong event!");
+
+
+e = new BlobEvent("hello", {data: blob});
+ok(e.type, "hello", "Wrong event type!");
+ok(!e.isTrusted, "Event shouldn't be trusted!");
+ok(!e.bubbles, "Event shouldn't bubble!");
+ok(!e.cancelable, "Event should be cancelable1!");
+is(e.data, blob , "Wrong event.data!");
+
+e = new BlobEvent("hello", { data: null });
+is(e.data, null, "Wrong event.data!");
+ok(!e.bubbles, "Event shouldn't bubble!");
+ok(!e.cancelable, "Event shouldn't be cancelable!");
+blob = null;
 // CloseEvent
 
 try {
diff --git a/dom/interfaces/events/Makefile.in b/dom/interfaces/events/Makefile.in
index 950096a984c7..2d85f87c6f41 100644
--- a/dom/interfaces/events/Makefile.in
+++ b/dom/interfaces/events/Makefile.in
@@ -58,6 +58,7 @@ XPIDLSRCS =					\
 	nsIDOMCustomEvent.idl			\
 	nsIDOMCompositionEvent.idl		\
 	nsIDOMWheelEvent.idl			\
+	nsIDOMBlobEvent.idl			\
 	$(NULL)
 
 include $(topsrcdir)/config/rules.mk
diff --git a/dom/interfaces/events/nsIDOMBlobEvent.idl b/dom/interfaces/events/nsIDOMBlobEvent.idl
new file mode 100644
index 000000000000..bd1b4216ecf9
--- /dev/null
+++ b/dom/interfaces/events/nsIDOMBlobEvent.idl
@@ -0,0 +1,31 @@
+/* -*- Mode: IDL; 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/. */
+
+#include "nsIDOMEvent.idl"
+interface nsIDOMBlob;
+/**
+ * The nsIDOMBlobEvent interface is used for server-sent events
+ *
+ * For more information on this interface, please see
+ * https://dvcs.w3.org/hg/dap/raw-file/tip/media-stream-capture/RecordingProposal.html
+ */
+[scriptable, builtinclass, uuid(84293ee0-68f5-11e2-9906-cf63ba8c6e43)]
+interface nsIDOMBlobEvent : nsIDOMEvent
+{
+  /**
+   * Custom blob data associated with this event.
+   */
+  readonly attribute nsIDOMBlob data;
+  
+  [noscript]
+  void initBlobEvent(in DOMString aType,
+                     in boolean aCanBubble,
+                     in boolean aCancelable,
+                     in nsIDOMBlob aData);
+};
+
+dictionary BlobEventInit : EventInit {
+  nsIDOMBlob data;
+};
diff --git a/dom/tests/mochitest/general/test_interfaces.html b/dom/tests/mochitest/general/test_interfaces.html
index 83f74799accb..5c89cd904380 100644
--- a/dom/tests/mochitest/general/test_interfaces.html
+++ b/dom/tests/mochitest/general/test_interfaces.html
@@ -532,7 +532,8 @@ var interfaceNamesInGlobalScope =
     "CSSGroupingRule",
     "AsyncScrollEventDetail",
     "MozSmsSegmentInfo",
-    "DOMCursor"
+    "DOMCursor",
+    "BlobEvent"
   ]
 
 for (var i in SpecialPowers.Components.interfaces) {
diff --git a/js/xpconnect/src/dictionary_helper_gen.conf b/js/xpconnect/src/dictionary_helper_gen.conf
index a1fa30d23a93..19a05b56e0ef 100644
--- a/js/xpconnect/src/dictionary_helper_gen.conf
+++ b/js/xpconnect/src/dictionary_helper_gen.conf
@@ -28,11 +28,13 @@ dictionaries = [
 special_includes = [
     'nsContentUtils.h',
     'XPCQuickStubs.h',
-    'nsIDOMApplicationRegistry.h'
+    'nsIDOMApplicationRegistry.h',
+    'nsIDOMFile.h'
   ]
 
 # name of the type to not include using #include "typename.h"
 exclude_automatic_type_include = [
     'nsISupports',
-    'mozIDOMApplication'
+    'mozIDOMApplication',
+    'nsIDOMBlob'
   ]
diff --git a/js/xpconnect/src/event_impl_gen.conf.in b/js/xpconnect/src/event_impl_gen.conf.in
index 2188e7b00951..19180f629ace 100644
--- a/js/xpconnect/src/event_impl_gen.conf.in
+++ b/js/xpconnect/src/event_impl_gen.conf.in
@@ -41,18 +41,21 @@ simple_events = [
 #endif
     'MozSmsEvent',
     'DeviceStorageChangeEvent',
-    'PopupBlockedEvent'
+    'PopupBlockedEvent',
+    'BlobEvent'
   ]
 
 """ include file names """
 special_includes = [
     'DictionaryHelpers.h',
     'nsContentUtils.h',
-    'nsIDOMApplicationRegistry.h'
+    'nsIDOMApplicationRegistry.h',
+    'nsIDOMFile.h'
   ]
 
 """ name of the type to not include using #include "typename.h" """
 exclude_automatic_type_include = [
     'nsISupports',
-    'mozIDOMApplication'
+    'mozIDOMApplication',
+    'nsIDOMBlob'
   ]