tools/gn: rename char_offset to column_number

tools/gn/parse_tree.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/parse_tree.h"
 
 #include <string>
 #include <tuple>
 
 #include "base/stl_util.h"
@@ skipping 235 matching lines @@
     *err = Err(member_.get(), "No value named \"" +
         member_->value().value() + "\" in scope \"" + base_.value() + "\"");
     return Value();
   }
   return *result;
 }
 
 void AccessorNode::SetNewLocation(int line_number) {
   Location old = base_.location();
   base_.set_location(
-      Location(old.file(), line_number, old.char_offset(), old.byte()));
+      Location(old.file(), line_number, old.column_number(), old.byte()));
 }
 
 // BinaryOpNode ---------------------------------------------------------------
 
 BinaryOpNode::BinaryOpNode() {
 }
 
 BinaryOpNode::~BinaryOpNode() {
 }
 
@@ skipping 206 matching lines @@
 }
 
 void IdentifierNode::Print(std::ostream& out, int indent) const {
   out << IndentFor(indent) << "IDENTIFIER(" << value_.value() << ")\n";
   PrintComments(out, indent);
 }
 
 void IdentifierNode::SetNewLocation(int line_number) {
   Location old = value_.location();
   value_.set_location(
-      Location(old.file(), line_number, old.char_offset(), old.byte()));
+      Location(old.file(), line_number, old.column_number(), old.byte()));
 }
 
 // ListNode -------------------------------------------------------------------
 
 ListNode::ListNode() : prefer_multiline_(false) {
 }
 
 ListNode::~ListNode() {
   STLDeleteContainerPointers(contents_.begin(), contents_.end());
 }
@@ skipping 238 matching lines @@
 }
 
 void LiteralNode::Print(std::ostream& out, int indent) const {
   out << IndentFor(indent) << "LITERAL(" << value_.value() << ")\n";
   PrintComments(out, indent);
 }
 
 void LiteralNode::SetNewLocation(int line_number) {
   Location old = value_.location();
   value_.set_location(
-      Location(old.file(), line_number, old.char_offset(), old.byte()));
+      Location(old.file(), line_number, old.column_number(), old.byte()));
 }
 
 // UnaryOpNode ----------------------------------------------------------------
 
 UnaryOpNode::UnaryOpNode() {
 }
 
 UnaryOpNode::~UnaryOpNode() {
 }
 
@@ skipping 75 matching lines @@
 
 Err EndNode::MakeErrorDescribing(const std::string& msg,
                                         const std::string& help) const {
   return Err(value_, msg, help);
 }
 
 void EndNode::Print(std::ostream& out, int indent) const {
   out << IndentFor(indent) << "END(" << value_.value() << ")\n";
   PrintComments(out, indent);
 }