remove ViewHelper, use ViewCompat instead (#23280)

Summary:
ViewHelper has only setBackground method which works identical to ViewCompat.setBackground from Android Support Library. This PR removes ViewHelper, and uses ViewCompat instead.

[Android] [Changed] - remove ViewHelper, use ViewCompat instead
Pull Request resolved: #23280

Differential Revision: D13950510

Pulled By: mdvacca

fbshipit-source-id: 10b5122affac17d4b66fb995339c6715c0871ed0

Author: dulmandakh

ReactAndroid/src/main/java/com/facebook/react/views/common/ViewHelper.java

@@ -6,6 +6,9 @@ rn_android_library(
     visibility = [
         "PUBLIC",
     ],
+    provided_deps = [
+        react_native_dep("third-party/android/support/v4:lib-support-v4"),
+    ],
     deps = [
         YOGA_TARGET,
         react_native_dep("libraries/fbcore/src/main/java/com/facebook/common/logging:logging"),

ReactAndroid/src/main/java/com/facebook/react/views/view/BUCK

@@ -8,8 +8,8 @@
 import android.graphics.Color;
 import android.graphics.drawable.Drawable;
 import android.graphics.drawable.LayerDrawable;
+import android.support.v4.view.ViewCompat;
 import android.view.View;
-import com.facebook.react.views.common.ViewHelper;
 import javax.annotation.Nullable;
 
 /** Class that manages the background for views and borders. */
@@ -26,15 +26,15 @@ private ReactViewBackgroundDrawable getOrCreateReactViewBackground() {
     if (mReactBackgroundDrawable == null) {
       mReactBackgroundDrawable = new ReactViewBackgroundDrawable(mView.getContext());
       Drawable backgroundDrawable = mView.getBackground();
-      ViewHelper.setBackground(
+      ViewCompat.setBackground(
           mView, null); // required so that drawable callback is cleared before we add the
       // drawable back as a part of LayerDrawable
       if (backgroundDrawable == null) {
-        ViewHelper.setBackground(mView, mReactBackgroundDrawable);
+        ViewCompat.setBackground(mView, mReactBackgroundDrawable);
       } else {
         LayerDrawable layerDrawable =
             new LayerDrawable(new Drawable[] {mReactBackgroundDrawable, backgroundDrawable});
-        ViewHelper.setBackground(mView, layerDrawable);
+        ViewCompat.setBackground(mView, layerDrawable);
       }
     }
     return mReactBackgroundDrawable;