Fix typing for ProgressBarAndroid

Summary: `ProgressBarAndroid` exported the wrong type and Flow wasn't catching some issues with it because they were hidden by a `$FlowFixMe` annotation. This exports the right type and fixes the bad usages.

Differential Revision: D16938853

fbshipit-source-id: 7ea4bbf379a010a76dc68ccb405e1f890d7e590a

Libraries/Components/ActivityIndicator/ActivityIndicator.js

@@ -109,6 +109,7 @@ const ActivityIndicator = (props: Props, forwardedRef?: any) => {
         // $FlowFixMe Flow doesn't know when this is the android component
         <PlatformActivityIndicator {...nativeProps} {...androidProps} />
       ) : (
+        // $FlowFixMe Flow doesn't know when this is the iOS component
         <PlatformActivityIndicator {...nativeProps} />
       )}
     </View>

Libraries/Components/ProgressBarAndroid/ProgressBarAndroid.android.js

@@ -100,4 +100,4 @@ ProgressBarAndroidToExport.defaultProps = {
 /* $FlowFixMe(>=0.89.0 site=react_native_android_fb) This comment suppresses an
  * error found when Flow v0.89 was deployed. To see the error, delete this
  * comment and run Flow. */
-module.exports = (ProgressBarAndroidToExport: ProgressBarAndroidNativeComponent);
+module.exports = (ProgressBarAndroidToExport: typeof ProgressBarAndroidNativeComponent);

Libraries/Components/ProgressBarAndroid/__tests__/ProgressBarAndroid-test.js

@@ -22,14 +22,14 @@ const render = require('../../../../jest/renderer');
 describe('<ProgressBarAndroid />', () => {
   it('should render as <ProgressBarAndroid> when mocked', () => {
     const instance = render.create(
-      <ProgressBarAndroid styleAttr="Horizontal" />,
+      <ProgressBarAndroid styleAttr="Horizontal" indeterminate={true} />,
     );
     expect(instance).toMatchSnapshot();
   });
 
   it('should shallow render as <ForwardRef(ProgressBarAndroid)> when mocked', () => {
     const output = render.shallow(
-      <ProgressBarAndroid styleAttr="Horizontal" />,
+      <ProgressBarAndroid styleAttr="Horizontal" indeterminate={true} />,
     );
     expect(output).toMatchSnapshot();
   });
@@ -38,7 +38,7 @@ describe('<ProgressBarAndroid />', () => {
     jest.dontMock('../ProgressBarAndroid');
 
     const output = render.shallow(
-      <ProgressBarAndroid styleAttr="Horizontal" />,
+      <ProgressBarAndroid styleAttr="Horizontal" indeterminate={true} />,
     );
     expect(output).toMatchSnapshot();
   });
@@ -47,7 +47,7 @@ describe('<ProgressBarAndroid />', () => {
     jest.dontMock('../ProgressBarAndroid');
 
     const instance = render.create(
-      <ProgressBarAndroid styleAttr="Horizontal" />,
+      <ProgressBarAndroid styleAttr="Horizontal" indeterminate={true} />,
     );
     expect(instance).toMatchSnapshot();
   });