Support explicit pools in actions

tools/gn/pool.cc

 // Copyright 2016 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 "tools/gn/pool.h"
 
 #include <sstream>
 
 #include "base/logging.h"
 
 Pool::~Pool() {}
 
 Pool* Pool::AsPool() {
   return this;
 }
 
 const Pool* Pool::AsPool() const {
   return this;
 }
 
 std::string Pool::GetNinjaName(const Label& default_toolchain) const {
   bool include_toolchain = label().toolchain_dir() != default_toolchain.dir() ||
                            label().toolchain_name() != default_toolchain.name();
   return GetNinjaName(include_toolchain);
 }
 
 std::string Pool::GetNinjaName(bool include_toolchain) const {
+  if (console_)
+    return "console";
+
   std::ostringstream buffer;
   if (include_toolchain) {
     DCHECK(label().toolchain_dir().is_source_absolute());
     std::string toolchain_dir = label().toolchain_dir().value();
     for (std::string::size_type i = 2; i < toolchain_dir.size(); ++i) {
       buffer << (toolchain_dir[i] == '/' ? '_' : toolchain_dir[i]);
     }
     buffer << label().toolchain_name() << "_";
   }
 
   DCHECK(label().dir().is_source_absolute());
   std::string label_dir = label().dir().value();
   for (std::string::size_type i = 2; i < label_dir.size(); ++i) {
     buffer << (label_dir[i] == '/' ? '_' : label_dir[i]);
   }
   buffer << label().name();
   return buffer.str();
 }