Work on GN iOS build.

tools/gn/gyp_binary_target_writer.h

 // 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.
 
 #ifndef TOOLS_GN_GYP_BINARY_TARGET_WRITER_H_
 #define TOOLS_GN_GYP_BINARY_TARGET_WRITER_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 45 matching lines @@
   // (rather than compiler flags).
   void WriteVCFlags(Flags& flags, int indent);
   void WriteMacFlags(Flags& flags, int indent);
 
   // Writes the Linux compiler and linker flags. The first version does the
   // flags for the given target, the second version takes a pregenerted list of
   // flags.
   void WriteLinuxFlagsForTarget(const Target* target, int indent);
   void WriteLinuxFlags(const Flags& flags, int indent);
 
+  // Writes out the given target and optional host flags. This will insert a
+  // target conditionn if there is a host build.
+  void WriteMacTargetAndHostFlags(const BuilderRecord* target,
+                                  const BuilderRecord* host,
+                                  int indent);
+
   // Shared helpers for writing specific parts of GYP files.
   void WriteSources(const Target* target, int indent);
   void WriteDeps(const Target* target, int indent);
   void WriteIncludeDirs(const Flags& flags, int indent);
   void WriteDirectDependentSettings(int indent);
   void WriteAllDependentSettings(int indent);
 
   // Writes out the given flags and such from all configs in the given list.
   void WriteSettingsFromConfigList(const std::vector<const Config*>& configs,
                                    int indent);
@@ skipping 10 matching lines @@
                        int indent);
 
   // All associated targets.
   TargetGroup group_;
 
   DISALLOW_COPY_AND_ASSIGN(GypBinaryTargetWriter);
 };
 
 #endif  // TOOLS_GN_GYP_BINARY_TARGET_WRITER_H_