Move stuff out of vendor/react_contrib/

Summary: This was a confusing place for them. BoundingDimensions, Position, and Touchable were only used in Touchable; StaticContainer I moved to Libraries/Components.

@​public

Reviewed By: @vjeux

Differential Revision: D2530730

fb-gh-sync-id: e636a6b7259c2bd3ab52c82ebd59a6c66c9e7e7a

Libraries/Components/StaticContainer.js

@@ -0,0 +1,54 @@
+/**
+ * @generated SignedSource<<2a163cdb088fb963f941e627fd89ce11>>
+ *
+ * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+ * !! This file is a check-in of a static_upstream project!      !!
+ * !!                                                            !!
+ * !! You should not modify this file directly. Instead:         !!
+ * !! 1) Use `fjs use-upstream` to temporarily replace this with !!
+ * !!    the latest version from upstream.                       !!
+ * !! 2) Make your changes, test them, etc.                      !!
+ * !! 3) Use `fjs push-upstream` to copy your changes back to    !!
+ * !!    static_upstream.                                        !!
+ * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+ *
+ * Copyright 2004-present Facebook. All Rights Reserved.
+ *
+ * @providesModule StaticContainer.react
+ * @typechecks
+ * @flow
+ */
+
+var React = require('React');
+
+var onlyChild = require('onlyChild');
+
+/**
+ * Renders static content efficiently by allowing React to short-circuit the
+ * reconciliation process. This component should be used when you know that a
+ * subtree of components will never need to be updated.
+ *
+ *   var someValue = ...; // We know for certain this value will never change.
+ *   return (
+ *     <StaticContainer>
+ *       <MyComponent value={someValue} />
+ *     </StaticContainer>
+ *   );
+ *
+ * Typically, you will not need to use this component and should opt for normal
+ * React reconciliation.
+ */
+class StaticContainer extends React.Component {
+
+  shouldComponentUpdate(nextProps: Object): boolean {
+    return !!nextProps.shouldUpdate;
+  }
+
+  render() {
+    var child = this.props.children;
+    return (child === null || child === false) ? null : onlyChild(child);
+  }
+
+}
+
+module.exports = StaticContainer;