Reduce code repetition in stack maps with macros.

Simplifies the code somewhat.  It also makes it possible
to get column names as strings for the debugging code.

Test: test-art-host-gtest-stack_map_test
Change-Id: I1a2e146e7a4372c0752693313e1b881cb4a818bc
diff --git a/compiler/optimizing/stack_map_stream.cc b/compiler/optimizing/stack_map_stream.cc
index d80e2fc..3685ab2 100644
--- a/compiler/optimizing/stack_map_stream.cc
+++ b/compiler/optimizing/stack_map_stream.cc
@@ -129,7 +129,7 @@
       CHECK_EQ(invoke_info.GetNativePcOffset(instruction_set_),
                StackMap::UnpackNativePc(packed_native_pc, instruction_set_));
       CHECK_EQ(invoke_info.GetInvokeType(), invoke_type);
-      CHECK_EQ(method_infos_[invoke_info.GetMethodIndexIdx()], dex_method_index);
+      CHECK_EQ(method_infos_[invoke_info.GetMethodInfoIndex()], dex_method_index);
     });
   }
 }
@@ -179,7 +179,7 @@
       if (encode_art_method) {
         CHECK_EQ(inline_info.GetArtMethod(), method);
       } else {
-        CHECK_EQ(method_infos_[inline_info.GetMethodIndexIdx()],
+        CHECK_EQ(method_infos_[inline_info.GetMethodInfoIndex()],
                  method->GetDexMethodIndexUnchecked());
       }
       CHECK_EQ(inline_info.HasDexRegisterMap(), (num_dex_registers != 0));