More of the concurrent copying collector.

Bug: 12687968
Change-Id: I62f70274d47df6d6cab714df95c518b750ce3105
diff --git a/compiler/jni/quick/jni_compiler.cc b/compiler/jni/quick/jni_compiler.cc
index bf996a2..ba73828 100644
--- a/compiler/jni/quick/jni_compiler.cc
+++ b/compiler/jni/quick/jni_compiler.cc
@@ -135,6 +135,7 @@
     FrameOffset handle_scope_offset = main_jni_conv->CurrentParamHandleScopeEntryOffset();
     // Check handle scope offset is within frame
     CHECK_LT(handle_scope_offset.Uint32Value(), frame_size);
+    // TODO: Insert the read barrier for this load.
     __ LoadRef(main_jni_conv->InterproceduralScratchRegister(),
                mr_conv->MethodRegister(), mirror::ArtMethod::DeclaringClassOffset());
     __ VerifyObject(main_jni_conv->InterproceduralScratchRegister(), false);