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/thread.cc b/runtime/thread.cc
index a8133a1..210e1b0 100644
--- a/runtime/thread.cc
+++ b/runtime/thread.cc
@@ -1116,21 +1116,10 @@
   Runtime* runtime = Runtime::Current();
   bool implicit_stack_check = !runtime->ExplicitStackOverflowChecks() && !runtime->IsAotCompiler();
 
-  // Valgrind on arm doesn't give the right values here. Do not install the guard page, and
-  // effectively disable stack overflow checks (we'll get segfaults, potentially) by setting
-  // stack_begin to 0.
-  const bool valgrind_on_arm =
-      (kRuntimeISA == InstructionSet::kArm || kRuntimeISA == InstructionSet::kArm64) &&
-      kMemoryToolIsValgrind &&
-      RUNNING_ON_MEMORY_TOOL != 0;
-  if (valgrind_on_arm) {
-    tlsPtr_.stack_begin = nullptr;
-  }
-
   ResetDefaultStackEnd();
 
   // Install the protected region if we are doing implicit overflow checks.
-  if (implicit_stack_check && !valgrind_on_arm) {
+  if (implicit_stack_check) {
     // The thread might have protected region at the bottom.  We need
     // to install our own region so we need to move the limits
     // of the stack to make room for it.