Convert media/formats to std::unique_ptr

media/formats/mp4/sample_to_group_iterator_unittest.cc

Index: media/formats/mp4/sample_to_group_iterator_unittest.cc
diff --git a/media/formats/mp4/sample_to_group_iterator_unittest.cc b/media/formats/mp4/sample_to_group_iterator_unittest.cc
index e94b5ffb8a73e1dd1bcec70820697ab7a97102d5..2c3e2fbefc1ea17b716e261c8c5ed8f07f739035 100644
--- a/media/formats/mp4/sample_to_group_iterator_unittest.cc
+++ b/media/formats/mp4/sample_to_group_iterator_unittest.cc
@@ -7,8 +7,9 @@
 #include <stddef.h>
 #include <stdint.h>
 
+#include <memory>
+
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace media {
@@ -41,7 +42,7 @@ class SampleToGroupIteratorTest : public testing::Test {
  protected:
   std::vector<uint32_t> sample_to_group_table_;
   SampleToGroup sample_to_group_;
-  scoped_ptr<SampleToGroupIterator> sample_to_group_iterator_;
+  std::unique_ptr<SampleToGroupIterator> sample_to_group_iterator_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(SampleToGroupIteratorTest);