MediaHTTPConnection: fix JNI signature
MediaHTTPConnection: fix JNI signature

mNativeContext was changed to a long, fix the GetFieldID signature

Change-Id: Ib19605d2c534a2aea7d75ab105349710905d716f

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base