Add Max-Res Decode Engine to CDM Core

(This is a port of http://go/wvgerrit/11555 from the Widevine CDM
repo.)

Bug: 16034599
Change-Id: Ie69afac7d89e27623adbc84d2baebccf1d1ba6e6

libwvdrmengine/cdm/core/test/mock_clock.h

@@ -0,0 +1,18 @@
+// Copyright 2014 Google Inc. All Rights Reserved.
+
+#ifndef CDM_TEST_MOCK_CLOCK_H_
+#define CDM_TEST_MOCK_CLOCK_H_
+
+#include "clock.h"
+#include "gmock/gmock.h"
+
+namespace wvcdm {
+
+class MockClock : public Clock {
+ public:
+  MOCK_METHOD0(GetCurrentTime, int64_t());
+};
+
+}  // wvcdm
+
+#endif  // CDM_TEST_MOCK_CLOCK_H_