Re-enable some more ART gtests when running under ASan.

Some tests in heap_verification_test and runtime_callbacks_test were
disabled when running under a memory tool, but they seem to work fine
when run under AddressSanitizer on host. They were presubmably
disabled because of issues with Valgrind. Enable them unconditionally,
as Valgrind support has been dropped from ART.

Test: SANITIZE_HOST=address ASAN_OPTIONS='detect_leaks=0' make test-art-host-heap_verification_test
Bug: 29282211
Bug: 62448488
Change-Id: Ic143e9c2f37420f770716d58ca603438198e413b
diff --git a/runtime/gc/heap_verification_test.cc b/runtime/gc/heap_verification_test.cc
index 3869533..e0c7faf 100644
--- a/runtime/gc/heap_verification_test.cc
+++ b/runtime/gc/heap_verification_test.cc
@@ -83,7 +83,6 @@
 }
 
 TEST_F(VerificationTest, IsValidClassInHeap) {
-  TEST_DISABLED_FOR_MEMORY_TOOL();
   ScopedObjectAccess soa(Thread::Current());
   VariableSizedHandleScope hs(soa.Self());
   Handle<mirror::String> string(
@@ -106,7 +105,6 @@
 }
 
 TEST_F(VerificationTest, DumpValidObjectInfo) {
-  TEST_DISABLED_FOR_MEMORY_TOOL();
   ScopedLogSeverity sls(LogSeverity::INFO);
   ScopedObjectAccess soa(Thread::Current());
   Runtime* const runtime = Runtime::Current();
@@ -126,7 +124,6 @@
 }
 
 TEST_F(VerificationTest, LogHeapCorruption) {
-  TEST_DISABLED_FOR_MEMORY_TOOL();
   ScopedLogSeverity sls(LogSeverity::INFO);
   ScopedObjectAccess soa(Thread::Current());
   Runtime* const runtime = Runtime::Current();
@@ -147,7 +144,6 @@
 }
 
 TEST_F(VerificationTest, FindPathFromRootSet) {
-  TEST_DISABLED_FOR_MEMORY_TOOL();
   ScopedLogSeverity sls(LogSeverity::INFO);
   ScopedObjectAccess soa(Thread::Current());
   Runtime* const runtime = Runtime::Current();
diff --git a/runtime/runtime_callbacks_test.cc b/runtime/runtime_callbacks_test.cc
index 54769f9..794ac19 100644
--- a/runtime/runtime_callbacks_test.cc
+++ b/runtime/runtime_callbacks_test.cc
@@ -339,9 +339,6 @@
 };
 
 TEST_F(RuntimeSigQuitCallbackRuntimeCallbacksTest, SigQuit) {
-  // SigQuit induces a dump. ASan isn't happy with libunwind reading memory.
-  TEST_DISABLED_FOR_MEMORY_TOOL();
-
   // The runtime needs to be started for the signal handler.
   Thread* self = Thread::Current();