Rename ObjPtr::Decode to ObjPtr::Ptr

Done to prevent ambiguity with ScopedObjectAccess::Decode.

Bug: 31113334

Test: test-art-host
Change-Id: I07a2497cc9cf66386311798933547471987fc316
diff --git a/runtime/verifier/method_verifier.cc b/runtime/verifier/method_verifier.cc
index 50466ed..374d825 100644
--- a/runtime/verifier/method_verifier.cc
+++ b/runtime/verifier/method_verifier.cc
@@ -4566,7 +4566,7 @@
     ObjPtr<mirror::Class> klass = field->GetDeclaringClass();
     const RegType& field_klass =
         FromClass(klass->GetDescriptor(&temp),
-                  klass.Decode(),
+                  klass.Ptr(),
                   klass->CannotBeAssignedFromOtherTypes());
     if (obj_type.IsUninitializedTypes()) {
       // Field accesses through uninitialized references are only allowable for constructors where
@@ -4668,7 +4668,7 @@
         can_load_classes_ ? field->GetType<true>() : field->GetType<false>();
     if (field_type_class != nullptr) {
       field_type = &FromClass(field->GetTypeDescriptor(),
-                              field_type_class.Decode(),
+                              field_type_class.Ptr(),
                               field_type_class->CannotBeAssignedFromOtherTypes());
     } else {
       DCHECK(!can_load_classes_ || self_->IsExceptionPending());
@@ -4793,7 +4793,7 @@
 
     if (field_type_class != nullptr) {
       field_type = &FromClass(field->GetTypeDescriptor(),
-                              field_type_class.Decode(),
+                              field_type_class.Ptr(),
                               field_type_class->CannotBeAssignedFromOtherTypes());
     } else {
       Thread* self = Thread::Current();
diff --git a/runtime/verifier/verifier_deps_test.cc b/runtime/verifier/verifier_deps_test.cc
index 4533464..71203e6 100644
--- a/runtime/verifier/verifier_deps_test.cc
+++ b/runtime/verifier/verifier_deps_test.cc
@@ -85,7 +85,7 @@
     SetVerifierDeps(dex_files);
 
     ObjPtr<mirror::ClassLoader> loader = soa->Decode<mirror::ClassLoader>(class_loader_);
-    class_linker_->RegisterDexFile(*dex_file_, loader.Decode());
+    class_linker_->RegisterDexFile(*dex_file_, loader.Ptr());
 
     klass_Main_ = FindClassByName("LMain;", soa);
     CHECK(klass_Main_ != nullptr);