diff --git a/image/decoders/icon/moz.build b/image/decoders/icon/moz.build
index 9ff31faaaac..b72920ac996 100644
--- a/image/decoders/icon/moz.build
+++ b/image/decoders/icon/moz.build
@@ -10,6 +10,10 @@ XPIDL_SOURCES += [
 
 XPIDL_MODULE = 'imgicon'
 
+EXPORTS += [
+    'nsIconURI.h',
+]
+
 UNIFIED_SOURCES += [
     'nsIconModule.cpp',
     'nsIconProtocolHandler.cpp',
@@ -20,6 +24,8 @@ FAIL_ON_WARNINGS = True
 
 FINAL_LIBRARY = 'xul'
 
+include('/ipc/chromium/chromium-config.mozbuild')
+
 platform = None
 
 if CONFIG['MOZ_WIDGET_GTK']:
diff --git a/image/decoders/icon/nsIconURI.cpp b/image/decoders/icon/nsIconURI.cpp
index 748b9bed90d..628eb3153e2 100644
--- a/image/decoders/icon/nsIconURI.cpp
+++ b/image/decoders/icon/nsIconURI.cpp
@@ -1,4 +1,5 @@
 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: set sw=2 sts=2 ts=2 et tw=80:
  *
  * 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
@@ -6,6 +7,8 @@
 
 #include "mozilla/ArrayUtils.h"
 
+#include "mozilla/ipc/URIUtils.h"
+
 #include "nsIconURI.h"
 #include "nsNetUtil.h"
 #include "nsIIOService.h"
@@ -15,6 +18,7 @@
 #include <stdlib.h>
 
 using namespace mozilla;
+using namespace mozilla::ipc;
 
 #define DEFAULT_IMAGE_SIZE 16
 
@@ -59,7 +63,7 @@ nsMozIconURI::nsMozIconURI()
 nsMozIconURI::~nsMozIconURI()
 { }
 
-NS_IMPL_ISUPPORTS(nsMozIconURI, nsIMozIconURI, nsIURI)
+NS_IMPL_ISUPPORTS(nsMozIconURI, nsIMozIconURI, nsIURI, nsIIPCSerializableURI)
 
 #define MOZICON_SCHEME "moz-icon:"
 #define MOZICON_SCHEME_LEN (sizeof(MOZICON_SCHEME) - 1)
@@ -582,3 +586,59 @@ nsMozIconURI::GetIconState(nsACString& aState)
   return NS_OK;
 }
 ////////////////////////////////////////////////////////////////////////////////
+// nsIIPCSerializableURI methods:
+
+void
+nsMozIconURI::Serialize(URIParams& aParams)
+{
+  IconURIParams params;
+
+  if (mIconURL) {
+    URIParams iconURLParams;
+    SerializeURI(mIconURL, iconURLParams);
+    if (iconURLParams.type() == URIParams::T__None) {
+      // Serialization failed, bail.
+      return;
+    }
+
+    params.uri() = iconURLParams;
+  } else {
+    params.uri() = void_t();
+  }
+
+  params.size() = mSize;
+  params.fileName() = mFileName;
+  params.stockIcon() = mStockIcon;
+  params.iconSize() = mIconSize;
+  params.iconState() = mIconState;
+
+  aParams = params;
+}
+
+bool
+nsMozIconURI::Deserialize(const URIParams& aParams)
+{
+  if (aParams.type() != URIParams::TIconURIParams) {
+    MOZ_ASSERT_UNREACHABLE("Received unknown URI from other process!");
+    return false;
+  }
+
+  const IconURIParams& params = aParams.get_IconURIParams();
+  if (params.uri().type() != OptionalURIParams::Tvoid_t) {
+    nsCOMPtr<nsIURI> uri = DeserializeURI(params.uri().get_URIParams());
+    mIconURL = do_QueryInterface(uri);
+    if (!mIconURL) {
+      MOZ_ASSERT_UNREACHABLE("bad nsIURI passed");
+      return false;
+    }
+  }
+
+  mSize = params.size();
+  mContentType = params.contentType();
+  mFileName = params.fileName();
+  mStockIcon = params.stockIcon();
+  mIconSize = params.iconSize();
+  mIconState = params.iconState();
+
+  return true;
+}
diff --git a/image/decoders/icon/nsIconURI.h b/image/decoders/icon/nsIconURI.h
index 5bbaa79b68f..e5bc15655e5 100644
--- a/image/decoders/icon/nsIconURI.h
+++ b/image/decoders/icon/nsIconURI.h
@@ -10,6 +10,7 @@
 #include "nsIIconURI.h"
 #include "nsCOMPtr.h"
 #include "nsString.h"
+#include "nsIIPCSerializableURI.h"
 
 #define NS_MOZICONURI_CID                            \
 {                                                    \
@@ -20,11 +21,13 @@
 }
 
 class nsMozIconURI MOZ_FINAL : public nsIMozIconURI
+                             , public nsIIPCSerializableURI
 {
 public:
   NS_DECL_THREADSAFE_ISUPPORTS
   NS_DECL_NSIURI
   NS_DECL_NSIMOZICONURI
+  NS_DECL_NSIIPCSERIALIZABLEURI
 
   // nsMozIconURI
   nsMozIconURI();
diff --git a/ipc/glue/URIParams.ipdlh b/ipc/glue/URIParams.ipdlh
index ec9acbc67af..997456d2a6c 100644
--- a/ipc/glue/URIParams.ipdlh
+++ b/ipc/glue/URIParams.ipdlh
@@ -53,11 +53,23 @@ struct JARURIParams
   nsCString charset;
 };
 
+struct IconURIParams
+{
+  OptionalURIParams uri;
+  uint32_t size;
+  nsCString contentType;
+  nsCString fileName;
+  nsCString stockIcon;
+  int32_t iconSize;
+  int32_t iconState;
+};
+
 union URIParams
 {
   SimpleURIParams;
   StandardURLParams;
   JARURIParams;
+  IconURIParams;
 };
 
 union OptionalURIParams
diff --git a/ipc/glue/URIUtils.cpp b/ipc/glue/URIUtils.cpp
index a9b60f73d99..6bcb2872dd3 100644
--- a/ipc/glue/URIUtils.cpp
+++ b/ipc/glue/URIUtils.cpp
@@ -12,6 +12,7 @@
 #include "nsDebug.h"
 #include "nsID.h"
 #include "nsJARURI.h"
+#include "nsIconURI.h"
 #include "nsNetCID.h"
 #include "nsNetUtil.h"
 #include "nsThreadUtils.h"
@@ -84,6 +85,10 @@ DeserializeURI(const URIParams& aParams)
       serializable = do_CreateInstance(kJARURICID);
       break;
 
+    case URIParams::TIconURIParams:
+      serializable = new nsMozIconURI();
+      break;
+
     default:
       MOZ_CRASH("Unknown params!");
   }