Modal statusbar cleanup

Summary:
The hack for the status bar height is not necessary any longer, so we can remove
all code related to it

Reviewed By: lexs

Differential Revision: D3943770

fbshipit-source-id: 2d70f4ea10dd76ea6e6a73bb6edccae388bde1c0

Author: andreicoman11

ReactAndroid/src/main/java/com/facebook/react/shell/MainReactPackage.java

@@ -233,7 +233,7 @@ public List<ViewManager> createViewManagers(ReactApplicationContext reactContext
       new ReactDropdownPickerManager(),
       new ReactHorizontalScrollViewManager(),
       new ReactImageManager(),
-      new ReactModalHostManager(reactContext),
+      new ReactModalHostManager(),
       new ReactProgressBarViewManager(),
       new ReactRawTextManager(),
       new ReactScrollViewManager(),

ReactAndroid/src/main/java/com/facebook/react/views/modal/ReactModalHostManager.java

@@ -9,16 +9,12 @@
 
 package com.facebook.react.views.modal;
 
-import javax.annotation.Nullable;
-
 import java.util.Map;
 
 import android.content.DialogInterface;
 
-import com.facebook.react.bridge.ReactApplicationContext;
 import com.facebook.react.common.MapBuilder;
 import com.facebook.react.uimanager.LayoutShadowNode;
-import com.facebook.react.uimanager.PixelUtil;
 import com.facebook.react.uimanager.ThemedReactContext;
 import com.facebook.react.uimanager.UIManagerModule;
 import com.facebook.react.uimanager.ViewGroupManager;
@@ -32,12 +28,6 @@ public class ReactModalHostManager extends ViewGroupManager<ReactModalHostView>
 
   private static final String REACT_CLASS = "RCTModalHostView";
 
-  private final ReactApplicationContext mContext;
-
-  public ReactModalHostManager(ReactApplicationContext context) {
-    mContext = context;
-  }
-
   @Override
   public String getName() {
     return REACT_CLASS;
@@ -104,17 +94,6 @@ public Map<String, Object> getExportedCustomDirectEventTypeConstants() {
       .build();
   }
 
-  @Override
-  public @Nullable Map<String, Object> getExportedViewConstants() {
-    final int heightResId = mContext.getResources().getIdentifier("status_bar_height", "dimen", "android");
-    final float height = heightResId > 0 ?
-      PixelUtil.toDIPFromPixel(mContext.getResources().getDimensionPixelSize(heightResId)) :
-      0;
-
-    return MapBuilder.<String, Object>of(
-      "StatusBarHeight", height);
-  }
-
   @Override
   protected void onAfterUpdateTransaction(ReactModalHostView view) {
     super.onAfterUpdateTransaction(view);