libvpx: Pull from upstream

source/libvpx/test/idct_test.cc

Index: source/libvpx/test/idct_test.cc
===================================================================
--- source/libvpx/test/idct_test.cc	(revision 207479)
+++ source/libvpx/test/idct_test.cc	(working copy)
@@ -13,6 +13,7 @@
 #include "./vpx_config.h"
 #include "./vp8_rtcd.h"
 }
+#include "test/clear_system_state.h"
 #include "test/register_state_check.h"
 #include "third_party/googletest/src/include/gtest/gtest.h"
 
@@ -32,6 +33,10 @@
             output[i] = ((i & 0xF) < 4 && (i < 64)) ? 0 : -1;
     }
 
+    virtual void TearDown() {
+      libvpx_test::ClearSystemState();
+    }
+
     idct_fn_t UUT;
     short input[16];
     unsigned char output[256];