[ActivityIndicator] Add the onLayout prop to the outer container view

Summary:
ActivityIndicator was forwarding all of its props except `style` to the inner native view. This meant that onLayout would report a zero-sized frame that was relative to the wrapper view instead of the parent of the ActivityIndicator.

This diff adds `onLayout` to the wrapper view instead of the native view.

In general, all components that forward props need to be audited in this manner.

Closes https://github.com/facebook/react-native/pull/1292
Github Author: James Ide <ide@jameside.com>

Test Plan: `<ActivityIndicator onLayout={...} />` reports the size of the spinner plus a position relative to its parent view.

Libraries/Components/ActivityIndicatorIOS/ActivityIndicatorIOS.ios.js

@@ -53,6 +53,12 @@ var ActivityIndicatorIOS = React.createClass({
       'small',
       'large',
     ]),
+    /**
+     * Invoked on mount and layout changes with
+     *
+     *   {nativeEvent: { layout: {x, y, width, height}}}.
+     */
+    onLayout: PropTypes.func,
   },
 
   getDefaultProps: function(): DefaultProps {
@@ -65,10 +71,12 @@ var ActivityIndicatorIOS = React.createClass({
   },
 
   render: function() {
-    var {style, ...props} = this.props;
+    var {onLayout, style, ...props} = this.props;
     var sizeStyle = (this.props.size === 'large') ? styles.sizeLarge : styles.sizeSmall;
     return (
-      <View style={[styles.container, sizeStyle, style]}>
+      <View
+        onLayout={onLayout}
+        style={[styles.container, sizeStyle, style]}>
         <RCTActivityIndicatorView {...props} />
       </View>
     );

Libraries/Components/View/View.js

@@ -91,7 +91,9 @@ var View = React.createClass({
     onStartShouldSetResponderCapture: PropTypes.func,
 
     /**
-     * Invoked on mount and layout changes with {x, y, width, height}.
+     * Invoked on mount and layout changes with
+     *
+     *   {nativeEvent: { layout: {x, y, width, height}}}.
      */
     onLayout: PropTypes.func,
 

Libraries/Image/Image.ios.js

@@ -99,6 +99,12 @@ var Image = React.createClass({
      * testing scripts.
      */
     testID: PropTypes.string,
+    /**
+     * Invoked on mount and layout changes with
+     *
+     *   {nativeEvent: { layout: {x, y, width, height}}}.
+     */
+     onLayout: PropTypes.func,
   },
 
   statics: {

Libraries/Text/Text.js

@@ -92,6 +92,12 @@ var Text = React.createClass({
      * Used to locate this view in end-to-end tests.
      */
     testID: React.PropTypes.string,
+    /**
+     * Invoked on mount and layout changes with
+     *
+     *   {nativeEvent: { layout: {x, y, width, height}}}.
+     */
+     onLayout: React.PropTypes.func,
   },
 
   viewConfig: viewConfig,