Fixing platform name conversion in capabilities returned on new session request. Fixes SeleniumHQ#4669

Author: barancev

java/client/src/org/openqa/selenium/remote/RemoteWebDriver.java

@@ -233,7 +233,7 @@ protected void startSession(Capabilities desiredCapabilities) {
       if (platformString == null || "".equals(platformString)) {
         platform = Platform.ANY;
       } else {
-        platform = Platform.valueOf(platformString);
+        platform = Platform.fromString(platformString);
       }
     } catch (IllegalArgumentException e) {
       // The server probably responded with a name matching the os.name

java/client/test/org/openqa/selenium/PlatformTest.java

@@ -146,6 +146,11 @@ public void testWindows81Detection() {
                  Platform.WIN8_1, Platform.extractFromSysProperty("windows nt (unknown)", "6.3"));
   }
 
+  @Test
+  public void testWindowsIsWindows() {
+    assertEquals(Platform.fromString("windows"), Platform.WINDOWS);
+  }
+
   private void assertAllAre(Platform platform, String... osNames) {
     for (String osName : osNames) {
       Platform seen = Platform.extractFromSysProperty(osName);