Convert //chrome from scoped_ptr to std::unique_ptr

chrome/utility/image_writer/image_writer_unittest.cc

Index: chrome/utility/image_writer/image_writer_unittest.cc
diff --git a/chrome/utility/image_writer/image_writer_unittest.cc b/chrome/utility/image_writer/image_writer_unittest.cc
index ba6bab51c673cb342d0d579dc71524efc7824463..1facc07a46ff9edb3ef5e0573b10d58c0cf6b599 100644
--- a/chrome/utility/image_writer/image_writer_unittest.cc
+++ b/chrome/utility/image_writer/image_writer_unittest.cc
@@ -40,7 +40,7 @@ class ImageWriterUtilityTest : public testing::Test {
   void TearDown() override {}
 
   void FillFile(const base::FilePath& path, int pattern) {
-    scoped_ptr<char[]> buffer(new char[kTestFileSize]);
+    std::unique_ptr<char[]> buffer(new char[kTestFileSize]);
     memset(buffer.get(), pattern, kTestFileSize);
 
     ASSERT_TRUE(base::WriteFile(path, buffer.get(), kTestFileSize));