drm: use DrmSessionManager for session resource managing.

Bug: 19265536
Change-Id: Ie35184f99c51e7bd94d7c826ffb8e89040a81905
diff --git a/media/libmediaplayerservice/ProcessInfoInterface.h b/media/libmediaplayerservice/ProcessInfoInterface.h
index bdcc1da..222f92d 100644
--- a/media/libmediaplayerservice/ProcessInfoInterface.h
+++ b/media/libmediaplayerservice/ProcessInfoInterface.h
@@ -22,7 +22,7 @@
 namespace android {
 
 struct ProcessInfoInterface : public RefBase {
-    virtual int getPriority(int pid) = 0;
+    virtual bool getPriority(int pid, int* priority) = 0;
 
 protected:
     virtual ~ProcessInfoInterface() {}