Allow directories for GN data lists.

tools/gn/target.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_TARGET_H_
 #define TOOLS_GN_TARGET_H_
 
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 102 matching lines @@
     complete_static_lib_ = complete;
   }
 
   bool testonly() const { return testonly_; }
   void set_testonly(bool value) { testonly_ = value; }
 
   // Compile-time extra dependencies.
   const FileList& inputs() const { return inputs_; }
   FileList& inputs() { return inputs_; }
 
-  // Runtime dependencies.
-  const FileList& data() const { return data_; }
-  FileList& data() { return data_; }
+  // Runtime dependencies. These are "file-like things" that can either be
+  // directories or files. They do not need to exist, these are just passed as
+  // runtime dependencies to external test systems as necessary.
+  const std::vector<std::string>& data() const { return data_; }
+  std::vector<std::string>& data() { return data_; }
 
   // Returns true if targets depending on this one should have an order
   // dependency.
   bool hard_dep() const {
     return output_type_ == ACTION ||
            output_type_ == ACTION_FOREACH ||
            output_type_ == COPY_FILES;
   }
 
   // Returns the iterator range which can be used in range-based for loops
@@ skipping 127 matching lines @@
   std::string output_name_;
   std::string output_extension_;
 
   FileList sources_;
   bool all_headers_public_;
   FileList public_headers_;
   bool check_includes_;
   bool complete_static_lib_;
   bool testonly_;
   FileList inputs_;
-  FileList data_;
+  std::vector<std::string> data_;
 
   LabelTargetVector private_deps_;
   LabelTargetVector public_deps_;
   LabelTargetVector data_deps_;
 
   UniqueVector<LabelConfigPair> configs_;
   UniqueVector<LabelConfigPair> all_dependent_configs_;
   UniqueVector<LabelConfigPair> public_configs_;
   UniqueVector<LabelTargetPair> forward_dependent_configs_;
 
@@ skipping 19 matching lines @@
   const Toolchain* toolchain_;
 
   // Output files. Null until the target is resolved.
   OutputFile link_output_file_;
   OutputFile dependency_output_file_;
 
   DISALLOW_COPY_AND_ASSIGN(Target);
 };
 
 #endif  // TOOLS_GN_TARGET_H_