Add FloatRegister names to RegisterConfiguration.

test/unittests/compiler/instruction-sequence-unittest.cc

Index: test/unittests/compiler/instruction-sequence-unittest.cc
diff --git a/test/unittests/compiler/instruction-sequence-unittest.cc b/test/unittests/compiler/instruction-sequence-unittest.cc
index 9360ca4c148f7a338edfc6320c68b4055aae18bb..ec1bc2a476bf4ab4f6a44757b6365e637c006aed 100644
--- a/test/unittests/compiler/instruction-sequence-unittest.cc
+++ b/test/unittests/compiler/instruction-sequence-unittest.cc
@@ -69,6 +69,7 @@ RegisterConfiguration* InstructionSequenceTest::config() {
         num_general_registers_, num_double_registers_, num_general_registers_,
         num_double_registers_, num_double_registers_, allocatable_codes,
         allocatable_double_codes, general_register_names_,
+        double_register_names_,  // float register names
         double_register_names_));
   }
   return config_.get();