Separate sniffing from session initialization

This avoid lengthy/duplicate sniffing for drm plugins when a decrypt session is opened

o The change is backward compatibile in that no update is required
  for existing drm plug-ins if they do not plan to provide separate
  sniffer/extractor

related-to-bug: 5725548

Change-Id: I7fc4caf82d77472da4e2bc7b5d31060fb54fd84c
diff --git a/drm/libdrmframework/include/DrmManagerService.h b/drm/libdrmframework/include/DrmManagerService.h
index 9cb5804..1a8c2ae 100644
--- a/drm/libdrmframework/include/DrmManagerService.h
+++ b/drm/libdrmframework/include/DrmManagerService.h
@@ -98,9 +98,11 @@
 
     status_t getAllSupportInfo(int uniqueId, int* length, DrmSupportInfo** drmSupportInfoArray);
 
-    DecryptHandle* openDecryptSession(int uniqueId, int fd, off64_t offset, off64_t length);
+    DecryptHandle* openDecryptSession(
+        int uniqueId, int fd, off64_t offset, off64_t length, const char *mime);
 
-    DecryptHandle* openDecryptSession(int uniqueId, const char* uri);
+    DecryptHandle* openDecryptSession(
+        int uniqueId, const char* uri, const char* mime);
 
     status_t closeDecryptSession(int uniqueId, DecryptHandle* decryptHandle);