Bug 570620, part l: Implement the child side of PRenderFrame, which just acts as a conduit for shadow layers. r=tn

layout/ipc/RenderFrameChild.cpp

@@ -0,0 +1,82 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: sw=2 ts=8 et :
+ */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at:
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Mozilla Code.
+ *
+ * The Initial Developer of the Original Code is
+ *   The Mozilla Foundation
+ * Portions created by the Initial Developer are Copyright (C) 2010
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Chris Jones <jones.chris.g@gmail.com>
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+#include "RenderFrameChild.h"
+#include "mozilla/layers/ShadowLayersChild.h"
+
+using mozilla::layers::PLayersChild;
+using mozilla::layers::ShadowLayersChild;
+
+namespace mozilla {
+namespace layout {
+
+void
+RenderFrameChild::Destroy()
+{
+  size_t numChildren = ManagedPLayersChild().Length();
+  NS_ABORT_IF_FALSE(0 == numChildren || 1 == numChildren,
+                    "render frame must only have 0 or 1 layer forwarder");
+
+  if (numChildren) {
+    ShadowLayersChild* layers =
+      static_cast<ShadowLayersChild*>(ManagedPLayersChild()[0]);
+    layers->Destroy();
+    // |layers| was just deleted, take care
+  }
+
+  Send__delete__(this);
+  // WARNING: |this| is dead, hands off
+}
+
+PLayersChild*
+RenderFrameChild::AllocPLayers()
+{
+  return new ShadowLayersChild();
+}
+
+bool
+RenderFrameChild::DeallocPLayers(PLayersChild* aLayers)
+{
+  delete aLayers;
+  return true;
+}
+
+}  // namespace layout
+}  // namespace mozilla

layout/ipc/RenderFrameChild.h

@@ -0,0 +1,67 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: sw=2 ts=8 et :
+ */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at:
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Mozilla Code.
+ *
+ * The Initial Developer of the Original Code is
+ *   The Mozilla Foundation
+ * Portions created by the Initial Developer are Copyright (C) 2010
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Chris Jones <jones.chris.g@gmail.com>
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+#ifndef mozilla_dom_RenderFrameChild_h
+#define mozilla_dom_RenderFrameChild_h
+
+#include "mozilla/layout/PRenderFrameChild.h"
+
+namespace mozilla {
+namespace layout {
+
+class RenderFrameChild : public PRenderFrameChild
+{
+public:
+  RenderFrameChild() {}
+  virtual ~RenderFrameChild() {}
+
+  void Destroy();
+
+protected:
+  NS_OVERRIDE
+  virtual PLayersChild* AllocPLayers();
+  NS_OVERRIDE
+  virtual bool DeallocPLayers(PLayersChild* aLayers);
+};
+
+} // namespace layout
+} // namespace mozilla
+
+#endif  // mozilla_dom_RenderFrameChild_h