Remove object_utils.h.

Break into object_lock, field_helper and method_helper.
Clean up header files following this.
Also tidy some of the Handle code in response to compiler errors when resolving
the changes in this CL.

Change-Id: I73e63015a0f02a754d0866bfaf58208aebcaa295
diff --git a/runtime/verifier/method_verifier.cc b/runtime/verifier/method_verifier.cc
index eabb993..a1b86e0 100644
--- a/runtime/verifier/method_verifier.cc
+++ b/runtime/verifier/method_verifier.cc
@@ -25,10 +25,12 @@
 #include "dex_file-inl.h"
 #include "dex_instruction-inl.h"
 #include "dex_instruction_visitor.h"
+#include "field_helper.h"
 #include "gc/accounting/card_table-inl.h"
 #include "indenter.h"
 #include "intern_table.h"
 #include "leb128.h"
+#include "method_helper.h"
 #include "mirror/art_field-inl.h"
 #include "mirror/art_method-inl.h"
 #include "mirror/class.h"
@@ -36,7 +38,6 @@
 #include "mirror/dex_cache-inl.h"
 #include "mirror/object-inl.h"
 #include "mirror/object_array-inl.h"
-#include "object_utils.h"
 #include "register_line-inl.h"
 #include "runtime.h"
 #include "scoped_thread_state_change.h"
diff --git a/runtime/verifier/reg_type.cc b/runtime/verifier/reg_type.cc
index e24c920..f0729e4 100644
--- a/runtime/verifier/reg_type.cc
+++ b/runtime/verifier/reg_type.cc
@@ -24,7 +24,6 @@
 #include "mirror/class-inl.h"
 #include "mirror/object-inl.h"
 #include "mirror/object_array-inl.h"
-#include "object_utils.h"
 #include "reg_type_cache-inl.h"
 #include "scoped_thread_state_change.h"
 
diff --git a/runtime/verifier/reg_type_cache.cc b/runtime/verifier/reg_type_cache.cc
index ff9edbb..91fba4d 100644
--- a/runtime/verifier/reg_type_cache.cc
+++ b/runtime/verifier/reg_type_cache.cc
@@ -21,7 +21,6 @@
 #include "dex_file-inl.h"
 #include "mirror/class-inl.h"
 #include "mirror/object-inl.h"
-#include "object_utils.h"
 
 namespace art {
 namespace verifier {