FirefoxOptions should add browser name to the generated capabilities.…

… Otherwise new RemoteWebDriver(url, options.toCapabilities()) sends payload without browserName and grid hub can match it to a node that has no ability to run Firefox.

java/client/src/org/openqa/selenium/firefox/FirefoxOptions.java

@@ -21,7 +21,9 @@
 import static org.openqa.selenium.firefox.FirefoxDriver.BINARY;
 import static org.openqa.selenium.firefox.FirefoxDriver.MARIONETTE;
 import static org.openqa.selenium.firefox.FirefoxDriver.PROFILE;
+import static org.openqa.selenium.remote.BrowserType.FIREFOX;
 import static org.openqa.selenium.remote.CapabilityType.ACCEPT_SSL_CERTS;
+import static org.openqa.selenium.remote.CapabilityType.BROWSER_NAME;
 import static org.openqa.selenium.remote.CapabilityType.LOGGING_PREFS;
 import static org.openqa.selenium.remote.CapabilityType.PAGE_LOAD_STRATEGY;
 import static org.openqa.selenium.remote.CapabilityType.SUPPORTS_WEB_STORAGE;
@@ -41,6 +43,7 @@
 import org.openqa.selenium.WebDriverException;
 import org.openqa.selenium.firefox.internal.ProfilesIni;
 import org.openqa.selenium.logging.LoggingPreferences;
+import org.openqa.selenium.remote.BrowserType;
 import org.openqa.selenium.remote.DesiredCapabilities;
 
 import java.io.File;
@@ -478,6 +481,7 @@ private FirefoxProfile extractProfile(Capabilities capabilities) {
 
   public Capabilities toCapabilities() {
     HashMap<String, Object> caps = new HashMap<>(desiredCapabilities.asMap());
+    caps.put(BROWSER_NAME, FIREFOX);
 
     if (isLegacy()) {
       caps.put(FirefoxDriver.MARIONETTE, false);