Support bottom-right anchored fixed-position elements during a pinch gesture

cc/layer_impl.cc

Index: cc/layer_impl.cc
diff --git a/cc/layer_impl.cc b/cc/layer_impl.cc
index 638b0168f2caa2350b829cdaf1e00be17e027ffb..3d689f978fad9536fb43255cf5f7bc9bc3e536a9 100644
--- a/cc/layer_impl.cc
+++ b/cc/layer_impl.cc
@@ -51,6 +51,8 @@ LayerImpl::LayerImpl(LayerTreeImpl* treeImpl, int id)
     , m_forceRenderSurface(false)
     , m_isContainerForFixedPositionLayers(false)
     , m_fixedToContainerLayer(false)
+    , m_fixedToRightEdge(false)
+    , m_fixedToBottomEdge(false)
     , m_drawDepth(0)
 #ifndef NDEBUG
     , m_betweenWillDrawAndDidDraw(false)
@@ -343,7 +345,10 @@ void LayerImpl::pushPropertiesTo(LayerImpl* layer)
         layer->setOpacity(m_opacity);
     layer->setPosition(m_position);
     layer->setIsContainerForFixedPositionLayers(m_isContainerForFixedPositionLayers);
+    layer->setFixedContainerSizeDelta(m_fixedContainerSizeDelta);
     layer->setFixedToContainerLayer(m_fixedToContainerLayer);
+    layer->setFixedToRightEdge(m_fixedToRightEdge);
+    layer->setFixedToBottomEdge(m_fixedToBottomEdge);
     layer->setPreserves3D(preserves3D());
     layer->setUseParentBackfaceVisibility(m_useParentBackfaceVisibility);
     layer->setSublayerTransform(m_sublayerTransform);