Make MetadataBufferType.h C-friendly
Make MetadataBufferType.h C-friendly

Change-Id: I4388d8f6cf30f08858aec73aa971647feae4a5e3

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