Avoid heap allocations in IPAddress

content/browser/renderer_host/pepper/pepper_udp_socket_message_filter.cc

Index: content/browser/renderer_host/pepper/pepper_udp_socket_message_filter.cc
diff --git a/content/browser/renderer_host/pepper/pepper_udp_socket_message_filter.cc b/content/browser/renderer_host/pepper/pepper_udp_socket_message_filter.cc
index 08491b97b9bf4b711945dc721d51a8e4ed23ca76..b7ed3149ae85e93657f3aacb9748c6bc6786f55a 100644
--- a/content/browser/renderer_host/pepper/pepper_udp_socket_message_filter.cc
+++ b/content/browser/renderer_host/pepper/pepper_udp_socket_message_filter.cc
@@ -8,6 +8,7 @@
 #include <utility>
 
 #include "base/compiler_specific.h"
+#include "base/containers/stack_container.h"
 #include "base/logging.h"
 #include "base/metrics/histogram_macros.h"
 #include "build/build_config.h"
@@ -364,13 +365,14 @@ int32_t PepperUDPSocketMessageFilter::OnMsgJoinGroup(
   if (!socket_)
     return PP_ERROR_FAILED;
 
-  std::vector<uint8_t> group;
+  base::StackVector<uint8_t, 16> group;
   uint16_t port;
 
   if (!NetAddressPrivateImpl::NetAddressToIPEndPoint(addr, &group, &port))
     return PP_ERROR_ADDRESS_INVALID;
 
-  return NetErrorToPepperError(socket_->JoinGroup(net::IPAddress(group)));
+  return NetErrorToPepperError(
+      socket_->JoinGroup(net::IPAddress(group->data(), group->size())));
 }
 
 int32_t PepperUDPSocketMessageFilter::OnMsgLeaveGroup(
@@ -385,13 +387,14 @@ int32_t PepperUDPSocketMessageFilter::OnMsgLeaveGroup(
   if (!socket_)
     return PP_ERROR_FAILED;
 
-  std::vector<uint8_t> group;
+  base::StackVector<uint8_t, 16> group;
   uint16_t port;
 
   if (!NetAddressPrivateImpl::NetAddressToIPEndPoint(addr, &group, &port))
     return PP_ERROR_ADDRESS_INVALID;
 
-  return NetErrorToPepperError(socket_->LeaveGroup(net::IPAddress(group)));
+  return NetErrorToPepperError(
+      socket_->LeaveGroup(net::IPAddress(group->data(), group->size())));
 }
 
 void PepperUDPSocketMessageFilter::DoBind(
@@ -408,13 +411,14 @@ void PepperUDPSocketMessageFilter::DoBind(
       new net::UDPSocket(net::DatagramSocket::DEFAULT_BIND,
                          net::RandIntCallback(), NULL, net::NetLogSource()));
 
-  std::vector<uint8_t> address;
+  base::StackVector<uint8_t, 16> address;
   uint16_t port;
   if (!NetAddressPrivateImpl::NetAddressToIPEndPoint(addr, &address, &port)) {
     SendBindError(context, PP_ERROR_ADDRESS_INVALID);
     return;
   }
-  net::IPEndPoint end_point(net::IPAddress(address), port);
+  net::IPEndPoint end_point(net::IPAddress(address->data(), address->size()),
+                            port);
   {
     int net_result = socket->Open(end_point.GetFamily());
     if (net_result != net::OK) {
@@ -592,7 +596,7 @@ void PepperUDPSocketMessageFilter::DoSendTo(
     return;
   }
 
-  std::vector<uint8_t> address;
+  base::StackVector<uint8_t, 16> address;
   uint16_t port;
   if (!NetAddressPrivateImpl::NetAddressToIPEndPoint(addr, &address, &port)) {
     SendSendToError(context, PP_ERROR_ADDRESS_INVALID);
@@ -610,8 +614,8 @@ void PepperUDPSocketMessageFilter::DoSendTo(
     return;
   }
 
-  pending_sends_.push(
-      PendingSend(net::IPAddress(address), port, buffer, context));
+  pending_sends_.push(PendingSend(
+      net::IPAddress(address->data(), address->size()), port, buffer, context));
   // If there are other sends pending, we can't start yet.
   if (num_pending_sends)
     return;