[java] Deprecating USE_CHROMIUM so we can remove it after 4.0

[skip ci]

java/src/org/openqa/selenium/edge/EdgeOptions.java

@@ -16,12 +16,12 @@
 // under the License.
 package org.openqa.selenium.edge;
 
+import static org.openqa.selenium.remote.Browser.EDGE;
+
 import org.openqa.selenium.Capabilities;
 import org.openqa.selenium.chromium.ChromiumOptions;
 import org.openqa.selenium.remote.CapabilityType;
 
-import static org.openqa.selenium.remote.Browser.EDGE;
-
 /**
  * Class to manage options specific to {@link EdgeDriver}.
  *
@@ -45,6 +45,8 @@ public class EdgeOptions extends ChromiumOptions<EdgeOptions> {
 
   /**
    * Key used to indicate whether to use an Edge Chromium or Edge Legacy driver.
+   *
+   * @deprecated This will be removed as Chromium based Edge is the only supported one.
    */
   public static final String USE_CHROMIUM = "ms:edgeChromium";