Check for inputs not generated by deps

tools/gn/filesystem_utils.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_FILESYSTEM_UTILS_H_
 #define TOOLS_GN_FILESYSTEM_UTILS_H_
 
 #include <string>
 
 #include "base/files/file_path.h"
@@ skipping 64 matching lines @@
 
 // Returns a string piece pointing into the input string identifying the
 // directory name of the given path, including the last slash. Note that the
 // input pointer must outlive the output.
 base::StringPiece FindDir(const std::string* path);
 
 // Returns the substring identifying the last component of the dir, or the
 // empty substring if none. For example "//foo/bar/" -> "bar".
 base::StringPiece FindLastDirComponent(const SourceDir& dir);
 
+// Returns true if the given string is in the given output dir. This is pretty
+// stupid and doesn't handle "." and "..", etc., it is designed for a sanity
+// check to keep people from writing output files to the source directory
+// accidentally.
+bool IsStringInOutputDir(const SourceDir& output_dir, const std::string& str);
+
 // Verifies that the given string references a file inside of the given
-// directory. This is pretty stupid and doesn't handle "." and "..", etc.,
-// it is designed for a sanity check to keep people from writing output files
-// to the source directory accidentally.
+// directory. This just uses IsStringInOutputDir above.
 //
 // The origin will be blamed in the error.
 //
 // If the file isn't in the dir, returns false and sets the error. Otherwise
 // returns true and leaves the error untouched.
-bool EnsureStringIsInOutputDir(const SourceDir& dir,
+bool EnsureStringIsInOutputDir(const SourceDir& output_dir,
                                const std::string& str,
                                const ParseNode* origin,
                                Err* err);
 
 // ----------------------------------------------------------------------------
 
 // Returns true if the input string is absolute. Double-slashes at the
 // beginning are treated as source-relative paths. On Windows, this handles
 // paths of both the native format: "C:/foo" and ours "/C:/foo"
 bool IsPathAbsolute(const base::StringPiece& path);
@@ skipping 79 matching lines @@
 
 SourceDir GetTargetOutputDir(const Target* target);
 OutputFile GetTargetOutputDirAsOutputFile(const Target* target);
 SourceDir GetTargetGenDir(const Target* target);
 OutputFile GetTargetGenDirAsOutputFile(const Target* target);
 
 SourceDir GetCurrentOutputDir(const Scope* scope);
 SourceDir GetCurrentGenDir(const Scope* scope);
 
 #endif  // TOOLS_GN_FILESYSTEM_UTILS_H_