Update Widevine Classic Library to 4.5.0.10136.

Update license request URL references. Replaces URL ending with
.../GetEMMs.cgi with the new url. Update portal to widevine.

Widevine repo reference: https://widevine-internal-review.googlesource.com/#/c/14659/.

bug: 16630664
Change-Id: I7b263c239af75ce35e5c7a0b6856d129ee25332c

proprietary/samplePlayer/src/com/widevine/demo/WidevineDrm.java

@@ -44,9 +44,9 @@ public class WidevineDrm {
 
     public static class Settings {
         public static String WIDEVINE_MIME_TYPE = "video/wvm";
-        public static String DRM_SERVER_URI = "https://license.uat.widevine.com/getlicense/widevine";
+        public static String DRM_SERVER_URI = "https://license.uat.widevine.com/getlicense/widevine_test";
         public static String DEVICE_ID = "device12345"; // use a unique device ID
-        public static String PORTAL_NAME = "OEM";
+        public static String PORTAL_NAME = "widevine";
 
         // test with a sizeable block of user data...
         public static String USER_DATA = "01234567890123456789012345678901234567890123456789"