Fix typos in GN error message

tools/gn/setup.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/setup.h"
 
 #include <stdlib.h>
 #include <algorithm>
 #include <sstream>
 #include <utility>
@@ skipping 496 matching lines @@
     // path.
     base::FilePath dot_file_path =
         cmdline.GetSwitchValuePath(switches::kDotfile);
     if (dot_file_path.empty()) {
       dotfile_name_ = root_path.Append(kGnFile);
     } else {
       dotfile_name_ = base::MakeAbsoluteFilePath(dot_file_path);
       if (dotfile_name_.empty()) {
         Err(Location(), "Could not load dotfile.",
             "The file \"" + FilePathToUTF8(dot_file_path) +
-            "\" cound't be loaded.").PrintToStdout();
+            "\" couldn't be loaded.").PrintToStdout();
         return false;
       }
     }
   } else {
     // In the default case, look for a dotfile and that also tells us where the
     // source root is.
     base::FilePath cur_dir;
     base::GetCurrentDirectory(&cur_dir);
     dotfile_name_ = FindDotFile(cur_dir);
     if (dotfile_name_.empty()) {
@@ skipping 89 matching lines @@
   }
 }
 
 bool Setup::RunConfigFile() {
   if (scheduler_.verbose_logging())
     scheduler_.Log("Got dotfile", FilePathToUTF8(dotfile_name_));
 
   dotfile_input_file_.reset(new InputFile(SourceFile("//.gn")));
   if (!dotfile_input_file_->Load(dotfile_name_)) {
     Err(Location(), "Could not load dotfile.",
-        "The file \"" + FilePathToUTF8(dotfile_name_) + "\" cound't be loaded")
+        "The file \"" + FilePathToUTF8(dotfile_name_) + "\" couldn't be loaded")
         .PrintToStdout();
     return false;
   }
 
   Err err;
   dotfile_tokens_ = Tokenizer::Tokenize(dotfile_input_file_.get(), &err);
   if (err.has_error()) {
     err.PrintToStdout();
     return false;
   }
@@ skipping 95 matching lines @@
       if (err.has_error()) {
         err.PrintToStdout();
         return false;
       }
     }
     build_settings_.set_exec_script_whitelist(std::move(whitelist));
   }
 
   return true;
 }