Activate LayerImpl tree with sync+push instead of pointer swap

cc/texture_layer_impl.cc

Index: cc/texture_layer_impl.cc
diff --git a/cc/texture_layer_impl.cc b/cc/texture_layer_impl.cc
index b94fe1363d1c49e77447bc7f218c55e02b7dc89b..de3e62aab85337c3aec479d67e80cc58d14e73c6 100644
--- a/cc/texture_layer_impl.cc
+++ b/cc/texture_layer_impl.cc
@@ -54,6 +54,29 @@ void TextureLayerImpl::setTextureMailbox(const std::string& mailboxName, const b
     m_pendingMailboxReleaseCallback = releaseCallback;
 }
 
+scoped_ptr<LayerImpl> TextureLayerImpl::createLayerImpl(LayerTreeImpl* treeImpl)
+{
+    return TextureLayerImpl::create(treeImpl, id(), m_usesMailbox).PassAs<LayerImpl>();
+}
+
+void TextureLayerImpl::pushPropertiesTo(LayerImpl* layer)
+{
+    LayerImpl::pushPropertiesTo(layer);
+
+    TextureLayerImpl* textureLayer = static_cast<TextureLayerImpl*>(layer);
+    textureLayer->setFlipped(m_flipped);
+    textureLayer->setUVRect(m_uvRect);
+    textureLayer->setVertexOpacity(m_vertexOpacity);
+    textureLayer->setPremultipliedAlpha(m_premultipliedAlpha);
+    if (m_usesMailbox) {
+        textureLayer->setTextureMailbox(m_pendingMailboxName, m_pendingMailboxReleaseCallback);
+        m_pendingMailboxReleaseCallback.Reset();
+    } else {
+        textureLayer->setTextureId(m_textureId);
+    }
+}
+
+
 void TextureLayerImpl::willDraw(ResourceProvider* resourceProvider)
 {
     if (!m_usesMailbox) {