Add GetVersion API to query the client plugin version.

Includes Widevine libraries 4.5.0.8097

Change-Id: I7590d5a60f300f6686887f62ae127b86f76e6f94
related-to-bug: 6000505

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

@@ -75,6 +75,7 @@ public class VideoPlayerView extends Activity {
         } else {
             setContentView(R.layout.notprovisioned);
         }
+        drm.printPluginVersion();
     }
 
     @Override

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

@@ -32,6 +32,7 @@ public class WidevineDrm {
     private final static long DEVICE_IS_NOT_PROVISIONED = 1;
     private final static long DEVICE_IS_PROVISIONED_SD_ONLY = 2;
     private long mWVDrmInfoRequestStatusKey = DEVICE_IS_PROVISIONED;
+    private String mPluginVersion = "";
 
     public StringBuffer logBuffer = new StringBuffer();
 
@@ -144,6 +145,10 @@ public class WidevineDrm {
                 (mWVDrmInfoRequestStatusKey == DEVICE_IS_PROVISIONED_SD_ONLY));
     }
 
+    public void printPluginVersion() {
+        logMessage("plugin: " + mPluginVersion + "\n");
+    }
+
     public void registerPortal(String portal) {
 
         DrmInfoRequest request = new DrmInfoRequest(DrmInfoRequest.TYPE_REGISTRATION_INFO,
@@ -155,6 +160,8 @@ public class WidevineDrm {
         if (null != drmInfoRequestStatusKey && !drmInfoRequestStatusKey.equals("")) {
             mWVDrmInfoRequestStatusKey = Long.parseLong(drmInfoRequestStatusKey);
         }
+
+        mPluginVersion = (String)response.get("WVDrmInfoRequestVersionKey");
     }
 
     public int acquireRights(String assetUri) {