[Refactor Xcode Objects] Enable navigator paths for file references.

tools/gn/xcode_object.h

 // 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.
 
 #ifndef TOOLS_GN_XCODE_OBJECT_H_
 #define TOOLS_GN_XCODE_OBJECT_H_
 
 #include <iosfwd>
 #include <map>
 #include <memory>
@@ skipping 200 matching lines @@
 
 class PBXGroup : public PBXObject {
  public:
   explicit PBXGroup(const std::string& path = std::string(),
                     const std::string& name = std::string());
   ~PBXGroup() override;
 
   const std::string& path() const { return path_; }
 
   PBXObject* AddChild(std::unique_ptr<PBXObject> child);
-  PBXFileReference* AddSourceFile(const std::string& source_path);
+  PBXFileReference* AddSourceFile(const std::string& navigator_path,
+                                  const std::string& source_path);
+  bool is_source() { return is_source_; }
+  void set_is_source(const bool is_source) { is_source_ = is_source; }
 
   // PBXObject implementation.
   PBXObjectClass Class() const override;
   std::string Name() const override;
   void Visit(PBXObjectVisitor& visitor) override;
   void Print(std::ostream& out, unsigned indent) const override;
 
  private:
   std::vector<std::unique_ptr<PBXObject>> children_;
   std::string name_;
   std::string path_;
+  bool is_source_ = false;
 
   DISALLOW_COPY_AND_ASSIGN(PBXGroup);
 };
 
 // PBXNativeTarget ------------------------------------------------------------
 
 class PBXNativeTarget : public PBXTarget {
  public:
   PBXNativeTarget(const std::string& name,
                   const std::string& shell_script,
@@ skipping 21 matching lines @@
 // PBXProject -----------------------------------------------------------------
 
 class PBXProject : public PBXObject {
  public:
   PBXProject(const std::string& name,
              const std::string& config_name,
              const std::string& source_path,
              const PBXAttributes& attributes);
   ~PBXProject() override;
 
-  void AddSourceFile(const std::string& source_path);
+  void AddSourceFile(const std::string& navigator_path,
+                     const std::string& source_path);
   void AddAggregateTarget(const std::string& name,
                           const std::string& shell_script);
   void AddNativeTarget(const std::string& name,
                        const std::string& type,
                        const std::string& output_name,
                        const std::string& output_type,
                        const std::string& shell_script);
 
   void SetProjectDirPath(const std::string& project_dir_path);
   void SetProjectRoot(const std::string& project_root);
@@ skipping 100 matching lines @@
   void Print(std::ostream& out, unsigned indent) const override;
 
  private:
   std::vector<std::unique_ptr<XCBuildConfiguration>> configurations_;
   const PBXObject* owner_reference_;
 
   DISALLOW_COPY_AND_ASSIGN(XCConfigurationList);
 };
 
 #endif  // TOOLS_GN_XCODE_OBJECT_H_