Some easy conversions of scoped_ptr -> std::unique_ptr in the EDK.

mojo/edk/system/local_data_pipe_impl.h

Index: mojo/edk/system/local_data_pipe_impl.h
diff --git a/mojo/edk/system/local_data_pipe_impl.h b/mojo/edk/system/local_data_pipe_impl.h
index 07b4c1e865476489cc5658c1e84452e06507fd2f..2564a017954c603ec2389a7806112ff6ed13d664 100644
--- a/mojo/edk/system/local_data_pipe_impl.h
+++ b/mojo/edk/system/local_data_pipe_impl.h
@@ -5,8 +5,9 @@
 #ifndef MOJO_EDK_SYSTEM_LOCAL_DATA_PIPE_IMPL_H_
 #define MOJO_EDK_SYSTEM_LOCAL_DATA_PIPE_IMPL_H_
 
+#include <memory>
+
 #include "base/memory/aligned_memory.h"
-#include "base/memory/scoped_ptr.h"
 #include "mojo/edk/system/data_pipe_impl.h"
 #include "mojo/edk/system/system_impl_export.h"
 #include "mojo/public/cpp/system/macros.h"
@@ -82,7 +83,7 @@ class MOJO_SYSTEM_IMPL_EXPORT LocalDataPipeImpl final : public DataPipeImpl {
   // no greater than |current_num_bytes_|.
   void MarkDataAsConsumed(size_t num_bytes);
 
-  scoped_ptr<char, base::AlignedFreeDeleter> buffer_;
+  std::unique_ptr<char, base::AlignedFreeDeleter> buffer_;
   // Circular buffer.
   size_t start_index_;
   size_t current_num_bytes_;