Replace SmartPointer<T> with unique_ptr<T>

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 121163226d6da6f1da579f6db8fbd2a9b7c3fb19..101a9e3a02f2fd0faa874c0dcb5484401f122f87 100644
--- a/test/unittests/compiler/instruction-sequence-unittest.cc
+++ b/test/unittests/compiler/instruction-sequence-unittest.cc
@@ -55,7 +55,7 @@ InstructionSequenceTest::InstructionSequenceTest()
 
 void InstructionSequenceTest::SetNumRegs(int num_general_registers,
                                          int num_double_registers) {
-  CHECK(config_.is_empty());
+  CHECK(!config_);
   CHECK(instructions_.empty());
   CHECK(instruction_blocks_.empty());
   num_general_registers_ = num_general_registers;
@@ -64,8 +64,8 @@ void InstructionSequenceTest::SetNumRegs(int num_general_registers,
 
 
 RegisterConfiguration* InstructionSequenceTest::config() {
-  if (config_.is_empty()) {
-    config_.Reset(new RegisterConfiguration(
+  if (!config_) {
+    config_.reset(new RegisterConfiguration(
         num_general_registers_, num_double_registers_, num_general_registers_,
         num_double_registers_, allocatable_codes, allocatable_double_codes,
         kSimpleFPAliasing ? RegisterConfiguration::OVERLAP