Convert //base to use std::unique_ptr

base/debug/stack_trace_win.cc

Index: base/debug/stack_trace_win.cc
diff --git a/base/debug/stack_trace_win.cc b/base/debug/stack_trace_win.cc
index 059675226afcc2bb21878d8c685b4abb350d3fe5..95da513e66cfa945621c7d8c2ebf3415bd192493 100644
--- a/base/debug/stack_trace_win.cc
+++ b/base/debug/stack_trace_win.cc
@@ -71,7 +71,7 @@ bool InitializeSymbols() {
   // add the directory of the executable to symbol search path.
   // All following errors are non-fatal.
   const size_t kSymbolsArraySize = 1024;
-  scoped_ptr<wchar_t[]> symbols_path(new wchar_t[kSymbolsArraySize]);
+  std::unique_ptr<wchar_t[]> symbols_path(new wchar_t[kSymbolsArraySize]);
 
   // Note: The below function takes buffer size as number of characters,
   // not number of bytes!