Port folder renaming changes from AOM

Manually cherry-picked commits:
ceef058 libvpx->libaom part2
3d26d91 libvpx -> libaom
cfea7dd vp10/ -> av1/
3a8eff7 Fix a build issue for a test
bf4202e Rename vpx to aom

Change-Id: I1b0eb5a40796e3aaf41c58984b4229a439a597dc
diff --git a/test/acm_random.h b/test/acm_random.h
index eae2cf9..aec4c6b 100644
--- a/test/acm_random.h
+++ b/test/acm_random.h
@@ -13,9 +13,9 @@
 
 #include "third_party/googletest/src/include/gtest/gtest.h"
 
-#include "vpx/vpx_integer.h"
+#include "aom/vpx_integer.h"
 
-namespace libvpx_test {
+namespace libaom_test {
 
 class ACMRandom {
  public:
@@ -65,6 +65,6 @@
   testing::internal::Random random_;
 };
 
-}  // namespace libvpx_test
+}  // namespace libaom_test
 
 #endif  // TEST_ACM_RANDOM_H_