Support spaces in Mac GN build output names.

tools/gn/ninja_target_writer.cc

 // Copyright (c) 2013 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/ninja_target_writer.h"
 
 #include <sstream>
 
 #include "base/files/file_util.h"
 #include "base/strings/string_util.h"
@@ skipping 85 matching lines @@
 
 void NinjaTargetWriter::WriteSharedVars(const SubstitutionBits& bits) {
   bool written_anything = false;
 
   // Target label.
   if (bits.used[SUBSTITUTION_LABEL]) {
     WriteEscapedSubstitution(SUBSTITUTION_LABEL);
     written_anything = true;
   }
 
+  // Target label name
+  if (bits.used[SUBSTITUTION_LABEL_NAME]) {
+    WriteEscapedSubstitution(SUBSTITUTION_LABEL_NAME);
+    written_anything = true;
+  }
+
   // Root gen dir.
   if (bits.used[SUBSTITUTION_ROOT_GEN_DIR]) {
     WriteEscapedSubstitution(SUBSTITUTION_ROOT_GEN_DIR);
     written_anything = true;
   }
 
   // Root out dir.
   if (bits.used[SUBSTITUTION_ROOT_OUT_DIR]) {
     WriteEscapedSubstitution(SUBSTITUTION_ROOT_OUT_DIR);
     written_anything = true;
@@ skipping 133 matching lines @@
        << GetNinjaRulePrefixForToolchain(settings_)
        << Toolchain::ToolTypeToName(Toolchain::TYPE_STAMP);
   path_output_.WriteFiles(out_, files);
 
   if (!order_only_deps.empty()) {
     out_ << " ||";
     path_output_.WriteFiles(out_, order_only_deps);
   }
   out_ << std::endl;
 }