convert //gpu to std::unique_ptr

gpu/command_buffer/service/command_buffer_service_unittest.cc

Index: gpu/command_buffer/service/command_buffer_service_unittest.cc
diff --git a/gpu/command_buffer/service/command_buffer_service_unittest.cc b/gpu/command_buffer/service/command_buffer_service_unittest.cc
index 5b39a969afec332e3bc77e81a0bce5cff1817d8b..64df92c0ccb59745a8157e37d66d5c4bee4d49f8 100644
--- a/gpu/command_buffer/service/command_buffer_service_unittest.cc
+++ b/gpu/command_buffer/service/command_buffer_service_unittest.cc
@@ -53,7 +53,7 @@ class CommandBufferServiceTest : public testing::Test {
   }
 
   scoped_refptr<TransferBufferManagerInterface> transfer_buffer_manager_;
-  scoped_ptr<CommandBufferService> command_buffer_;
+  std::unique_ptr<CommandBufferService> command_buffer_;
 };
 
 TEST_F(CommandBufferServiceTest, InitializesCommandBuffer) {
@@ -84,7 +84,7 @@ class MockCallbackTest : public CallbackTest {
 TEST_F(CommandBufferServiceTest, CanSyncGetAndPutOffset) {
   Initialize(1024);
 
-  scoped_ptr<StrictMock<MockCallbackTest> > change_callback(
+  std::unique_ptr<StrictMock<MockCallbackTest>> change_callback(
       new StrictMock<MockCallbackTest>);
   command_buffer_->SetPutOffsetChangeCallback(
       base::Bind(
@@ -117,7 +117,7 @@ TEST_F(CommandBufferServiceTest, SetGetBuffer) {
   command_buffer_->CreateTransferBuffer(1024, &ring_buffer_id);
   EXPECT_GT(ring_buffer_id, 0);
 
-  scoped_ptr<StrictMock<MockCallbackTest> > change_callback(
+  std::unique_ptr<StrictMock<MockCallbackTest>> change_callback(
       new StrictMock<MockCallbackTest>);
   command_buffer_->SetGetBufferChangeCallback(
       base::Bind(