[react_native] JS files from D2017699: Expose JavaScriptEnabled property for WebView component on android.

Examples/UIExplorer/WebViewExample.js

@@ -94,6 +94,7 @@ var WebViewExample = React.createClass({
           automaticallyAdjustContentInsets={false}
           style={styles.webView}
           url={this.state.url}
+          javaScriptEnabledAndroid={true}
           onNavigationStateChange={this.onNavigationStateChange}
           startInLoadingState={true}
         />

Libraries/Components/WebView/WebView.android.js

@@ -42,6 +42,7 @@ var WebView = React.createClass({
     onNavigationStateChange: PropTypes.func,
     startInLoadingState: PropTypes.bool, // force WebView to show loadingView on first load
     style: View.propTypes.style,
+    javaScriptEnabledAndroid: PropTypes.bool,
     /**
      * Used to locate this view in end-to-end tests.
      */
@@ -90,6 +91,7 @@ var WebView = React.createClass({
         key="webViewKey"
         style={webViewStyles}
         url={this.props.url}
+        javaScriptEnabledAndroid={this.props.javaScriptEnabledAndroid}
         contentInset={this.props.contentInset}
         automaticallyAdjustContentInsets={this.props.automaticallyAdjustContentInsets}
         onLoadingStart={this.onLoadingStart}
@@ -157,6 +159,7 @@ var WebView = React.createClass({
 var RCTWebView = createReactIOSNativeComponentClass({
   validAttributes: merge(ReactIOSViewAttributes.UIView, {
     url: true,
+    javaScriptEnabledAndroid: true,
   }),
   uiViewClassName: 'RCTWebView',
 });

Libraries/Components/WebView/WebView.ios.js

@@ -92,6 +92,10 @@ var WebView = React.createClass({
     onNavigationStateChange: PropTypes.func,
     startInLoadingState: PropTypes.bool, // force WebView to show loadingView on first load
     style: View.propTypes.style,
+    /**
+     * Used for android only, JS is enabled by default for WebView on iOS
+     */
+    javaScriptEnabledAndroid: PropTypes.bool,
   },
 
   getInitialState: function() {