Fix videos app bandwidth accounting for streaming over 4G

Attribute traffic on socket descriptors to UID of videos app

Multi-repository commit, see also changes in frameworks/base/media.

Includes Widevine library version 4.5.0.6153

Change-Id: I5ddf1b7b758edc82d48a788fc30616d90cab4bd0
related-to-bug: 5434244

proprietary/wvm/include/WVMExtractorImpl.h

@@ -37,6 +37,9 @@ public:
     virtual void setAdaptiveStreamingMode(bool adaptive);
     bool getAdaptiveStreamingMode() const;
 
+    virtual void setUID(uid_t uid);
+
+    static void SocketInfoCallback(int fd, int op, void *context);
     static void cleanup();
 
 protected:
@@ -63,6 +66,9 @@ private:
 
     status_t mSetupStatus;
 
+    bool mUIDIsSet;
+    uid_t mUID;
+
     status_t readMetaData();
 
     const static size_t kStreamCacheSize = 10 * 1024 * 1024;