Fix WebView crashes in devices API 21-25 with outdated WebView

app/src/main/java/org/thoughtcrime/securesms/BaseActivity.java

@@ -3,7 +3,9 @@
 import android.app.ActivityManager;
 import android.content.Context;
 import android.content.Intent;
+import android.content.res.AssetManager;
 import android.content.res.Configuration;
+import android.os.Build;
 import android.os.Bundle;
 import android.view.View;
 import android.view.WindowManager;
@@ -117,6 +119,19 @@ public void applyOverrideConfiguration(@NonNull Configuration overrideConfigurat
     super.applyOverrideConfiguration(overrideConfiguration);
   }
 
+  // MOLLY: Workaround for WebView crashes in devices API 21-25 with outdated WebView
+  // https://issuetracker.google.com/issues/141351441
+  // Not reproducible in Signal because RegistrationNavigationActivity does not inherit
+  // this class and thus does not override the configuration.
+  @Override
+  public AssetManager getAssets() {
+    if (Build.VERSION.SDK_INT >= 21 && Build.VERSION.SDK_INT <= 25) {
+      return getResources().getAssets();  // Ignore overridden configuration
+    } else {
+      return super.getAssets();
+    }
+  }
+
   private void logEvent(@NonNull String event) {
     Log.d(TAG, "[" + Log.tag(getClass()) + "] " + event);
   }