convert //gpu to std::unique_ptr

gpu/command_buffer/service/context_group_unittest.cc

Index: gpu/command_buffer/service/context_group_unittest.cc
diff --git a/gpu/command_buffer/service/context_group_unittest.cc b/gpu/command_buffer/service/context_group_unittest.cc
index bd0fbf932ba653ab33d875268d625e1094c31cb8..4bfedc96f8514492deacadbb258ae85d7cc4a99c 100644
--- a/gpu/command_buffer/service/context_group_unittest.cc
+++ b/gpu/command_buffer/service/context_group_unittest.cc
@@ -6,7 +6,8 @@
 
 #include <stdint.h>
 
-#include "base/memory/scoped_ptr.h"
+#include <memory>
+
 #include "gpu/command_buffer/common/value_state.h"
 #include "gpu/command_buffer/service/gles2_cmd_decoder_mock.h"
 #include "gpu/command_buffer/service/gpu_service_test.h"
@@ -49,7 +50,7 @@ class ContextGroupTest : public GpuServiceTest {
   }
 
   GpuPreferences gpu_preferences_;
-  scoped_ptr<MockGLES2Decoder> decoder_;
+  std::unique_ptr<MockGLES2Decoder> decoder_;
   scoped_refptr<ContextGroup> group_;
 };
 
@@ -106,7 +107,7 @@ TEST_F(ContextGroupTest, InitializeNoExtensions) {
 }
 
 TEST_F(ContextGroupTest, MultipleContexts) {
-  scoped_ptr<MockGLES2Decoder> decoder2_(new MockGLES2Decoder());
+  std::unique_ptr<MockGLES2Decoder> decoder2_(new MockGLES2Decoder());
   TestHelper::SetupContextGroupInitExpectations(
       gl_.get(), DisallowedFeatures(), "", "", kBindGeneratesResource);
   EXPECT_TRUE(group_->Initialize(decoder_.get(), CONTEXT_TYPE_OPENGLES2,