ObjPtr<>-ify StackTraceElement and ClassLoader.

Test: m test-art-host-gtest
Test: testrunner.py --host --optimizing
Bug: 31113334
Change-Id: I457eeda55bbfb905dd2de0abd68451ab42ef9c1f
diff --git a/runtime/common_runtime_test.cc b/runtime/common_runtime_test.cc
index 87c7ba6..f4cc161 100644
--- a/runtime/common_runtime_test.cc
+++ b/runtime/common_runtime_test.cc
@@ -52,7 +52,7 @@
 #include "jni/jni_internal.h"
 #include "mirror/class-alloc-inl.h"
 #include "mirror/class-inl.h"
-#include "mirror/class_loader.h"
+#include "mirror/class_loader-inl.h"
 #include "mirror/object_array-alloc-inl.h"
 #include "native/dalvik_system_DexFile.h"
 #include "noop_compiler_callbacks.h"