Initial import of Widevine Common Encryption DRM engine

Builds libwvmdrmengine.so, which is loaded by the new
MediaDrm APIs to support playback of Widevine/CENC
protected content.

Change-Id: I6f57dd37083dfd96c402cb9dd137c7d74edc8f1c

libwvdrmengine/cdm/src/clock.cpp

@@ -0,0 +1,19 @@
+// Copyright 2013 Google Inc. All Rights Reserved.
+//
+// Clock - implemented using the standard linux time library
+
+#include "clock.h"
+
+#include <sys/time.h>
+
+namespace wvcdm {
+
+int64_t GetCurrentTime() {
+  struct timeval tv;
+  tv.tv_sec = tv.tv_usec = 0;
+  gettimeofday(&tv, NULL);
+  return tv.tv_sec;
+}
+
+
+};  // namespace wvcdm