Now we have a proper C++ library, use std::unique_ptr.

Also remove the Android.libcxx.mk and other bits of stlport compatibility
mechanics.

Change-Id: Icdf7188ba3c79cdf5617672c1cfd0a68ae596a61
diff --git a/runtime/zip_archive.cc b/runtime/zip_archive.cc
index 13b4219..841c01a 100644
--- a/runtime/zip_archive.cc
+++ b/runtime/zip_archive.cc
@@ -16,17 +16,15 @@
 
 #include "zip_archive.h"
 
-#include <vector>
-
 #include <fcntl.h>
 #include <stdio.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <unistd.h>
+#include <vector>
 
 #include "base/stringprintf.h"
 #include "base/unix_file/fd_file.h"
-#include "UniquePtrCompat.h"
 
 namespace art {
 
@@ -56,7 +54,7 @@
   std::string name(entry_filename);
   name += " extracted in memory from ";
   name += entry_filename;
-  UniquePtr<MemMap> map(MemMap::MapAnonymous(name.c_str(),
+  std::unique_ptr<MemMap> map(MemMap::MapAnonymous(name.c_str(),
                                              NULL, GetUncompressedLength(),
                                              PROT_READ | PROT_WRITE, false, error_msg));
   if (map.get() == nullptr) {
@@ -123,7 +121,7 @@
   DCHECK(name != nullptr);
 
   // Resist the urge to delete the space. <: is a bigraph sequence.
-  UniquePtr< ::ZipEntry> zip_entry(new ::ZipEntry);
+  std::unique_ptr< ::ZipEntry> zip_entry(new ::ZipEntry);
   const int32_t error = FindEntry(handle_, name, zip_entry.get());
   if (error) {
     *error_msg = std::string(ErrorCodeString(error));