Add JS Minify option to settings in Android

Summary: Useful for debugging minification issues and more representative perf testing.

Differential Revision: D3080489

fb-gh-sync-id: 315f696d3847a213eb95f247f409173a01864567
shipit-source-id: 315f696d3847a213eb95f247f409173a01864567

ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactSettingsForTests.java

@@ -27,6 +27,11 @@ public class ReactSettingsForTests implements DeveloperSettings {
     return true;
   }
 
+  @Override
+  public boolean isJSMinifyEnabled() {
+    return false;
+  }
+
   @Override
   public boolean isElementInspectorEnabled() {
     return false;