Revert^2 "Remove support for Valgrind in ART."

- Disable test configuration art-gtest-valgrind64
  (art-gtest-valgrind32 was already disabled).
- Remove Makefile logic regarding testing with Valgrind.
- Remove occurrences of `TEST_DISABLED_FOR_MEMORY_TOOL_VALGRIND`.
- Replace occurrences of `TEST_DISABLED_FOR_MEMORY_TOOL_ASAN` with
  `TEST_DISABLED_FOR_MEMORY_TOOL`.
- Replace the potentially dynamically evaluated
  `RUNNING_ON_MEMORY_TOOL` expression with constant
  `kRunningOnMemoryTool`.
- Simplify and fold the logic of
  `art::ArenaAllocatorMemoryToolCheckImpl` and
  `art::ArenaAllocatorMemoryToolCheck` into
  `art::ArenaAllocatorMemoryTool`.
- Adjust comments regarding memory tools.
- Remove Valgrind suppression files.
- Remove `--callgrind` option from tools/art.

This reverts commit 8b362a87d52a6668ffd2283ef6ffc274315f41c8.

Change-Id: I23c76845e6ccf766f19b22b58a0d5161f60842a9
Test: art/test.py
Test: art/test/testrunner/run_build_test_target.py art-asan
Bug: 77856586
Bug: 29282211
diff --git a/runtime/native_stack_dump.cc b/runtime/native_stack_dump.cc
index 14f3f45..b3a47c3 100644
--- a/runtime/native_stack_dump.cc
+++ b/runtime/native_stack_dump.cc
@@ -289,8 +289,10 @@
                      ArtMethod* current_method,
                      void* ucontext_ptr,
                      bool skip_frames) {
-  // b/18119146
-  if (RUNNING_ON_MEMORY_TOOL != 0) {
+  // Historical note: This was disabled when running under Valgrind (b/18119146).
+  // TODO: Valgrind is no longer supported, but Address Sanitizer is:
+  // check whether this test works with ASan.
+  if (kRunningOnMemoryTool) {
     return;
   }