OEMCrypto Profiler

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

libwvdrmengine/mediadrm/include/WVDrmPlugin.h

@@ -13,6 +13,7 @@
 #include "media/stagefright/foundation/ABase.h"
 #include "media/stagefright/foundation/AString.h"
 #include "OEMCryptoCENC.h"
+#include "profiler_session.h"
 #include "utils/Errors.h"
 #include "utils/KeyedVector.h"
 #include "utils/List.h"
@@ -274,6 +275,19 @@ class WVDrmPlugin : public android::DrmPlugin,
   status_t mapAndNotifyOfOEMCryptoResult(const Vector<uint8_t>& sessionId,
                                          OEMCryptoResult res);
 
+  bool tryGettingSessionFromPropertyName(
+    const String8& name,
+    const String8& tag,
+    wvcdm::oemprofiler::ProfilerSession** out) const;
+
+  bool tryGettingOEMProfilingHistory(
+      const String8& name,
+      Vector<uint8_t>& value) const;
+
+  bool tryGettingOEMProfilingStats(
+      const String8& name,
+      Vector<uint8_t>& value) const;
+
   status_t mapOEMCryptoResult(OEMCryptoResult res);
 
   bool initDataResemblesPSSH(const Vector<uint8_t>& initData);