Update HTTP proxy configuration for all media playback inside stagefright.

Change-Id: Ie0dd00045aba668d8b49da73224e7a7c9c04f69b
related-to-bug: 8873723
(cherry picked from commit 2704965b8a1ff3b7450ff58ccecf86d8ec688c40)
diff --git a/media/libmediaplayerservice/MediaPlayerService.h b/media/libmediaplayerservice/MediaPlayerService.h
index 82dc29b..b33805d 100644
--- a/media/libmediaplayerservice/MediaPlayerService.h
+++ b/media/libmediaplayerservice/MediaPlayerService.h
@@ -256,6 +256,9 @@
             const String8& iface);
     virtual status_t            dump(int fd, const Vector<String16>& args);
 
+    virtual status_t        updateProxyConfig(
+            const char *host, int32_t port, const char *exclusionList);
+
             void                removeClient(wp<Client> client);
 
     // For battery usage tracking purpose