Offset rects by origin when projecting from composited to graphics layer.

Source/core/rendering/compositing/CompositedLayerMapping.cpp

Index: Source/core/rendering/compositing/CompositedLayerMapping.cpp
diff --git a/Source/core/rendering/compositing/CompositedLayerMapping.cpp b/Source/core/rendering/compositing/CompositedLayerMapping.cpp
index 3a7688193a3dd83c17a926e590fcde4c376ed3c6..1fa687b392281bc6564696b1ad8dbcb67f189593 100644
--- a/Source/core/rendering/compositing/CompositedLayerMapping.cpp
+++ b/Source/core/rendering/compositing/CompositedLayerMapping.cpp
@@ -742,7 +742,7 @@ void CompositedLayerMapping::updateGraphicsLayerGeometry(GraphicsLayerUpdater::U
     } else if (m_childTransformLayer) {
         const IntRect borderBox = toRenderBox(m_owningLayer.renderer())->pixelSnappedBorderBoxRect();
         m_childTransformLayer->setSize(borderBox.size());
-        m_childTransformLayer->setPosition(FloatPoint(contentOffsetInCompostingLayer()));
+        m_childTransformLayer->setPosition(FloatPoint(contentOffsetInCompositingLayer()));
     }
 
     if (m_maskLayer) {
@@ -1697,7 +1697,7 @@ FloatPoint3D CompositedLayerMapping::computeTransformOrigin(const IntRect& borde
 }
 
 // Return the offset from the top-left of this compositing layer at which the renderer's contents are painted.
-LayoutSize CompositedLayerMapping::contentOffsetInCompostingLayer() const
+LayoutSize CompositedLayerMapping::contentOffsetInCompositingLayer() const
 {
     return LayoutSize(-m_compositedBounds.x(), -m_compositedBounds.y());
 }
@@ -1705,7 +1705,7 @@ LayoutSize CompositedLayerMapping::contentOffsetInCompostingLayer() const
 LayoutRect CompositedLayerMapping::contentsBox() const
 {
     LayoutRect contentsBox = contentsRect(renderer());
-    contentsBox.move(contentOffsetInCompostingLayer());
+    contentsBox.move(contentOffsetInCompositingLayer());
     return contentsBox;
 }