This CL is a merge from the widevine repo of: http://go/wvgerrit/16491 Circular Buffer http://go/wvgerrit/16512 Circular Buffer Tests http://go/wvgerrit/16493 Entry Writer http://go/wvgerrit/16495 Profiled Scope http://go/wvgerrit/16500 Stats Collection http://go/wvgerrit/16543 Disallow Stats Copy or Assign http://go/wvgerrit/16514 Moving OEM Function Enum http://go/wvgerrit/16501 Defining Session Interface http://go/wvgerrit/16502 Session Definitions http://go/wvgerrit/16573 Remove code to num bytes table http://go/wvgerrit/16556 Connecting Profiler to Profiled Scope http://go/wvgerrit/16557 Android Reading Profiler History http://go/wvgerrit/16574 Adding Get Stats Method http://go/wvgerrit/16606 Seperating Session Parsing http://go/wvgerrit/16607 Adding get stats method to DRMPlugin http://go/wvgerrit/16608 Fixing Linux Build Failure http://go/wvgerrit/16612 Stop Clearing History http://go/wvgerrit/16613 Accessing profiler information using session id http://go/wvgerrit/16614 Making All Session Subsets of Global Session BUG: 25123303 BUG: 26027857 Change-Id: Ie2422e644aa631871852ea0e461695aeb7060f88