Convert //chrome from scoped_ptr to std::unique_ptr

chrome/utility/safe_browsing/mac/dmg_iterator.h

Index: chrome/utility/safe_browsing/mac/dmg_iterator.h
diff --git a/chrome/utility/safe_browsing/mac/dmg_iterator.h b/chrome/utility/safe_browsing/mac/dmg_iterator.h
index 0c6c4aaa1e79693b625fa0ead7dcf79f09613585..f4ebc0ce01c37eea89f1b6a70d467fb732dc7a0b 100644
--- a/chrome/utility/safe_browsing/mac/dmg_iterator.h
+++ b/chrome/utility/safe_browsing/mac/dmg_iterator.h
@@ -7,8 +7,9 @@
 
 #include <stddef.h>
 
+#include <memory>
+
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #include "base/strings/string16.h"
 #include "chrome/utility/safe_browsing/mac/udif.h"
@@ -44,13 +45,14 @@ class DMGIterator {
   base::string16 GetPath();
 
   // Returns a ReadStream for the current file item.
-  scoped_ptr<ReadStream> GetReadStream();
+  std::unique_ptr<ReadStream> GetReadStream();
 
  private:
   UDIFParser udif_;  // The UDIF parser that accesses the partitions.
   ScopedVector<ReadStream> partitions_;  // Streams for all the HFS partitions.
   size_t current_partition_;  // The index in |partitions_| of the current one.
-  scoped_ptr<HFSIterator> hfs_;  // The HFSIterator for |current_partition_|.
+  std::unique_ptr<HFSIterator>
+      hfs_;  // The HFSIterator for |current_partition_|.
 
   DISALLOW_COPY_AND_ASSIGN(DMGIterator);
 };