ART: Convert pointer size to enum

Move away from size_t to dedicated enum (class).

Bug: 30373134
Bug: 30419309
Test: m test-art-host
Change-Id: Id453c330f1065012e7d4f9fc24ac477cc9bb9269
diff --git a/compiler/trampolines/trampoline_compiler.h b/compiler/trampolines/trampoline_compiler.h
index 8f823f1..1a10e4c 100644
--- a/compiler/trampolines/trampoline_compiler.h
+++ b/compiler/trampolines/trampoline_compiler.h
@@ -27,10 +27,10 @@
 // Create code that will invoke the function held in thread local storage.
 std::unique_ptr<const std::vector<uint8_t>> CreateTrampoline32(InstructionSet isa,
                                                                EntryPointCallingConvention abi,
-                                                               ThreadOffset<4> entry_point_offset);
+                                                               ThreadOffset32 entry_point_offset);
 std::unique_ptr<const std::vector<uint8_t>> CreateTrampoline64(InstructionSet isa,
                                                                EntryPointCallingConvention abi,
-                                                               ThreadOffset<8> entry_point_offset);
+                                                               ThreadOffset64 entry_point_offset);
 
 }  // namespace art