[net/dns] Rename SystemHostResolverProc and CallSystemHostResolverProc.

net/dns/host_resolver_proc.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/dns/host_resolver_proc.h"
 
 #include "build/build_config.h"
 
 #include "base/logging.h"
 #include "base/sys_byteorder.h"
@@ skipping 63 matching lines @@
     AddressFamily address_family,
     HostResolverFlags host_resolver_flags,
     AddressList* addrlist,
     int* os_error) {
   if (previous_proc_) {
     return previous_proc_->Resolve(host, address_family, host_resolver_flags,
                                    addrlist, os_error);
   }
 
   // Final fallback is the system resolver.
-  return SystemHostResolverProc(host, address_family, host_resolver_flags,
+  return SystemHostResolverCall(host, address_family, host_resolver_flags,
                                 addrlist, os_error);
 }
 
 void HostResolverProc::SetPreviousProc(HostResolverProc* proc) {
   HostResolverProc* current_previous = previous_proc_;
   previous_proc_ = NULL;
   // Now that we've guaranteed |this| is the last proc in a chain, we can
   // detect potential cycles using GetLastProc().
   previous_proc_ = (GetLastProc(proc) == this) ? current_previous : proc;
 }
@@ skipping 17 matching lines @@
   HostResolverProc* old = default_proc_;
   default_proc_ = proc;
   return old;
 }
 
 // static
 HostResolverProc* HostResolverProc::GetDefault() {
   return default_proc_;
 }
 
-int SystemHostResolverProc(const std::string& host,
+int SystemHostResolverCall(const std::string& host,
                            AddressFamily address_family,
                            HostResolverFlags host_resolver_flags,
                            AddressList* addrlist,
                            int* os_error) {
   if (os_error)
     *os_error = 0;
 
   struct addrinfo* ai = NULL;
   struct addrinfo hints = {0};
 
@@ skipping 108 matching lines @@
   // http://crbug.com/134142
   if (ai == NULL)
     return ERR_NAME_NOT_RESOLVED;
 #endif
 
   *addrlist = AddressList::CreateFromAddrinfo(ai);
   freeaddrinfo(ai);
   return OK;
 }
 
+SystemHostResolverProc::SystemHostResolverProc() : HostResolverProc(NULL) {}
+
+int SystemHostResolverProc::Resolve(const std::string& hostname,
+                                    AddressFamily address_family,
+                                    HostResolverFlags host_resolver_flags,
+                                    AddressList* addr_list,
+                                    int* os_error) {
+  return SystemHostResolverCall(hostname,
+                                address_family,
+                                host_resolver_flags,
+                                addr_list,
+                                os_error);
+}
+
+SystemHostResolverProc::~SystemHostResolverProc() {}
+
 }  // namespace net