Refactor ClassRoot/GetClassRoot().

Move it outside the ClassLinker, into its own header file,
and add retrieval based on a mirror class template argument.
Keep the SetClassRoot() as a private member of ClassLinker.

Make the new GetClassRoot()s return ObjPtr<>.

Test: m test-art-host-gtest
Test: testrunner.py --host --optimizing
Bug: 31113334
Change-Id: Icbc6b62b41f6ffd65b437297a21eadbb0454e2b7

1 files changed, 2 insertions, 1 deletions

diff --git a/runtime/interpreter/unstarted_runtime_test.cc b/runtime/interpreter/unstarted_runtime_test.cc
index 860de2c28b..98fe8b271b 100644
--- a/runtime/interpreter/unstarted_runtime_test.cc
+++ b/runtime/interpreter/unstarted_runtime_test.cc
@@ -23,6 +23,7 @@
 #include "base/enums.h"
 #include "base/memory_tool.h"
 #include "class_linker.h"
+#include "class_root.h"
 #include "common_runtime_test.h"
 #include "dex/descriptors_names.h"
 #include "dex/dex_instruction.h"
@@ -1370,7 +1371,7 @@ TEST_F(UnstartedRuntimeTest, ConstructorNewInstance0) {
 
   Handle<mirror::ObjectArray<mirror::Object>> args = hs.NewHandle(
       mirror::ObjectArray<mirror::Object>::Alloc(
-          self, class_linker_->GetClassRoot(ClassLinker::ClassRoot::kObjectArrayClass), 1));
+          self, GetClassRoot<mirror::ObjectArray<mirror::Object>>(class_linker_), 1));
   ASSERT_TRUE(args != nullptr);
   args->Set(0, input.Get());