Fix help and error messages.

tools/gn/function_rebase_path.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/build_settings.h"
 #include "tools/gn/filesystem_utils.h"
 #include "tools/gn/functions.h"
 #include "tools/gn/parse_tree.h"
 #include "tools/gn/scope.h"
 #include "tools/gn/settings.h"
@@ skipping 153 matching lines @@
     "  your tool is expecting.\n"
     "\n"
     "  The common case is to use this to convert paths relative to the\n"
     "  current directory to be relative to the build directory (which will\n"
     "  be the current directory when executing scripts).\n"
     "\n"
     "Arguments\n"
     "\n"
     "  input\n"
     "      A string or list of strings representing file or directory names\n"
-    "      These can be relative paths (\"foo/bar.txt\", system absolte paths\n"
-    "      (\"/foo/bar.txt\"), or source absolute paths (\"//foo/bar.txt\").\n"
+    "      These can be relative paths (\"foo/bar.txt\"), system absolute\n"
+    "      paths (\"/foo/bar.txt\"), or source absolute paths\n"
+    "      (\"//foo/bar.txt\").\n"
     "\n"
     "  current_base\n"
     "      Directory representing the base for relative paths in the input.\n"
     "      If this is not an absolute path, it will be treated as being\n"
     "      relative to the current build file. Use \".\" to convert paths\n"
     "      from the current BUILD-file's directory.\n"
     "\n"
     "  new_base\n"
     "      The directory to convert the paths to be relative to. As with the\n"
     "      current_base, this can be a relative path, which will be treated\n"
@@ skipping 89 matching lines @@
   } else {
     to_dir = current_dir.ResolveRelativeDir(args[2].string_value());
   }
 
   // Path conversion.
   SeparatorConversion sep_conversion = SEP_NO_CHANGE;
   if (args.size() == 4) {
     if (convert_to_system_absolute) {
       *err = Err(function, "Can't specify slash conversion.",
           "You specified absolute system path output by using an empty string "
-          "for the desination directory on rebase_path(). In this case, you "
+          "for the destination directory on rebase_path(). In this case, you "
           "can't specify slash conversion.");
       return result;
     }
 
     if (!args[3].VerifyTypeIs(Value::STRING, err))
       return result;
     const std::string& sep_string = args[3].string_value();
     if (sep_string == "to_system") {
       sep_conversion = SEP_TO_SYSTEM;
     } else if (sep_string == "from_system") {
@@ skipping 27 matching lines @@
     }
     return result;
   }
 
   *err = Err(function->function(),
              "rebase_path requires a list or a string.");
   return result;
 }
 
 }  // namespace functions