diff -r 000000000000 -r 6474c204b198 widget/xpwidgets/nsClipboardProxy.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/widget/xpwidgets/nsClipboardProxy.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,100 @@
+/* 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 "mozilla/dom/ContentChild.h"
+#include "nsClipboardProxy.h"
+#include "nsISupportsPrimitives.h"
+#include "nsCOMPtr.h"
+#include "nsComponentManagerUtils.h"
+#include "nsXULAppAPI.h"
+
+using namespace mozilla;
+using mozilla::dom::ContentChild;
+
+NS_IMPL_ISUPPORTS(nsClipboardProxy, nsIClipboard)
+
+nsClipboardProxy::nsClipboardProxy()
+{
+}
+
+NS_IMETHODIMP
+nsClipboardProxy::SetData(nsITransferable *aTransferable,
+			  nsIClipboardOwner *anOwner, int32_t aWhichClipboard)
+{
+  nsCOMPtr<nsISupports> tmp;
+  uint32_t len;
+  nsresult rv  = aTransferable->GetTransferData(kUnicodeMime, getter_AddRefs(tmp),
+                                                &len);
+  NS_ENSURE_SUCCESS(rv, rv);
+  nsCOMPtr<nsISupportsString> supportsString = do_QueryInterface(tmp);
+  // No support for non-text data
+  NS_ENSURE_TRUE(supportsString, NS_ERROR_NOT_IMPLEMENTED);
+  nsAutoString buffer;
+  supportsString->GetData(buffer);
+
+  bool isPrivateData = false;
+  aTransferable->GetIsPrivateData(&isPrivateData);
+  ContentChild::GetSingleton()->SendSetClipboardText(buffer, isPrivateData,
+						     aWhichClipboard);
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsClipboardProxy::GetData(nsITransferable *aTransferable, int32_t aWhichClipboard)
+{
+  nsAutoString buffer;
+  ContentChild::GetSingleton()->SendGetClipboardText(aWhichClipboard, &buffer);
+
+  nsresult rv;
+  nsCOMPtr<nsISupportsString> dataWrapper =
+    do_CreateInstance(NS_SUPPORTS_STRING_CONTRACTID, &rv);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  rv = dataWrapper->SetData(buffer);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  // If our data flavor has already been added, this will fail. But we don't care
+  aTransferable->AddDataFlavor(kUnicodeMime);
+
+  nsCOMPtr<nsISupports> nsisupportsDataWrapper =
+    do_QueryInterface(dataWrapper);
+  rv = aTransferable->SetTransferData(kUnicodeMime, nsisupportsDataWrapper,
+                                      buffer.Length() * sizeof(char16_t));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsClipboardProxy::EmptyClipboard(int32_t aWhichClipboard)
+{
+  ContentChild::GetSingleton()->SendEmptyClipboard(aWhichClipboard);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsClipboardProxy::HasDataMatchingFlavors(const char **aFlavorList,
+                                    uint32_t aLength, int32_t aWhichClipboard,
+                                    bool *aHasText)
+{
+  *aHasText = false;
+  ContentChild::GetSingleton()->SendClipboardHasText(aWhichClipboard, aHasText);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsClipboardProxy::SupportsSelectionClipboard(bool *aIsSupported)
+{
+  *aIsSupported = false;
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsClipboardProxy::SupportsFindClipboard(bool *aIsSupported)
+{
+  *aIsSupported = false;
+  return NS_OK;
+}