Avoid heap allocations in IPAddress

content/browser/renderer_host/pepper/pepper_socket_utils.cc

Index: content/browser/renderer_host/pepper/pepper_socket_utils.cc
diff --git a/content/browser/renderer_host/pepper/pepper_socket_utils.cc b/content/browser/renderer_host/pepper/pepper_socket_utils.cc
index b749682afaa6af264ea13ebbd203ff2ec9f34903..84617ab522fc67d3f745de5d5a9f394c68353a4a 100644
--- a/content/browser/renderer_host/pepper/pepper_socket_utils.cc
+++ b/content/browser/renderer_host/pepper/pepper_socket_utils.cc
@@ -7,6 +7,7 @@
 #include <string>
 #include <vector>
 
+#include "base/containers/stack_container.h"
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
 #include "base/memory/ref_counted.h"
@@ -38,7 +39,7 @@ SocketPermissionRequest CreateSocketPermissionRequest(
   std::string host =
       ppapi::NetAddressPrivateImpl::DescribeNetAddress(net_addr, false);
   uint16_t port = 0;
-  std::vector<unsigned char> address;
+  base::StackVector<uint8_t, 16> address;
   ppapi::NetAddressPrivateImpl::NetAddressToIPEndPoint(
       net_addr, &address, &port);
   return SocketPermissionRequest(type, host, port);