Fix redundant styles on RefreshControl for Android

Summary:
Fixed a bug that RefreshControl wrongly apply redundant styles on Android, this solves #10742
Closes https://github.com/facebook/react-native/pull/10899

Differential Revision: D4176670

fbshipit-source-id: 357bfd726a39fe8e79d4d70ddfdfd1d39034620e

Libraries/Components/ScrollView/ScrollView.js

@@ -531,10 +531,13 @@ const ScrollView = React.createClass({
         // On Android wrap the ScrollView with a AndroidSwipeRefreshLayout.
         // Since the ScrollView is wrapped add the style props to the
         // AndroidSwipeRefreshLayout and use flex: 1 for the ScrollView.
+        // Note: we should only apply props.style on the wrapper
+        // however, the ScrollView still needs the baseStyle to be scrollable
+
         return React.cloneElement(
           refreshControl,
           {style: props.style},
-          <ScrollViewClass {...props} ref={this._setScrollViewRef}>
+          <ScrollViewClass {...props} style={baseStyle} ref={this._setScrollViewRef}>
             {contentContainer}
           </ScrollViewClass>
         );