Blacklist tests failing on valgrind.

bug: 72909916
Change-Id: Ieabb341e7e15713580f96a9daea6b33921ca5306
diff --git a/runtime/mem_map_test.cc b/runtime/mem_map_test.cc
index 3adbf18..172472a 100644
--- a/runtime/mem_map_test.cc
+++ b/runtime/mem_map_test.cc
@@ -166,6 +166,7 @@
 // We need mremap to be able to test ReplaceMapping at all
 #if HAVE_MREMAP_SYSCALL
 TEST_F(MemMapTest, ReplaceMapping_SameSize) {
+  TEST_DISABLED_FOR_MEMORY_TOOL_VALGRIND();
   std::string error_msg;
   std::unique_ptr<MemMap> dest(MemMap::MapAnonymous("MapAnonymousEmpty-atomic-replace-dest",
                                                     nullptr,
@@ -203,6 +204,7 @@
 }
 
 TEST_F(MemMapTest, ReplaceMapping_MakeLarger) {
+  TEST_DISABLED_FOR_MEMORY_TOOL_VALGRIND();
   std::string error_msg;
   std::unique_ptr<MemMap> dest(MemMap::MapAnonymous("MapAnonymousEmpty-atomic-replace-dest",
                                                     nullptr,
@@ -251,6 +253,7 @@
 }
 
 TEST_F(MemMapTest, ReplaceMapping_MakeSmaller) {
+  TEST_DISABLED_FOR_MEMORY_TOOL_VALGRIND();
   std::string error_msg;
   std::unique_ptr<MemMap> dest(MemMap::MapAnonymous("MapAnonymousEmpty-atomic-replace-dest",
                                                     nullptr,