libvpx: Pull from upstream

source/libvpx/test/subtract_test.cc

Index: source/libvpx/test/subtract_test.cc
===================================================================
--- source/libvpx/test/subtract_test.cc	(revision 207479)
+++ source/libvpx/test/subtract_test.cc	(working copy)
@@ -10,6 +10,7 @@
 
 #include "third_party/googletest/src/include/gtest/gtest.h"
 #include "test/acm_random.h"
+#include "test/clear_system_state.h"
 #include "test/register_state_check.h"
 extern "C" {
 #include "vpx_config.h"
@@ -23,7 +24,12 @@
 
 namespace {
 
-class SubtractBlockTest : public ::testing::TestWithParam<subtract_b_fn_t> {};
+class SubtractBlockTest : public ::testing::TestWithParam<subtract_b_fn_t> {
+ public:
+  virtual void TearDown() {
+    libvpx_test::ClearSystemState();
+  }
+};
 
 using libvpx_test::ACMRandom;