Printing: Remove unused PageOverlay since header/footers are drawn in PrintWebViewHelper.

printing/page_overlays.h

-// Copyright (c) 2006-2009 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 PRINTING_PAGE_OVERLAYS_H_
-#define PRINTING_PAGE_OVERLAYS_H_
-
-#include <string>
-
-namespace printing {
-
-class PrintedDocument;
-class PrintedPage;
-
-// Page's overlays, i.e. headers and footers. Contains the strings that will be
-// printed in the overlays, with actual values as variables. The variables are
-// replaced by their actual values with ReplaceVariables().
-class PageOverlays {
- public:
-  // Position of the header/footer.
-  enum HorizontalPosition {
-    LEFT,
-    CENTER,
-    RIGHT,
-  };
-
-  // Position of the header/footer.
-  enum VerticalPosition {
-    TOP,
-    BOTTOM,
-  };
-
-  PageOverlays();
-  ~PageOverlays();
-
-  // Equality operator.
-  bool Equals(const PageOverlays& rhs) const;
-
-  // Returns the string of an overlay according to its x,y position.
-  const std::wstring& GetOverlay(HorizontalPosition x,
-                                 VerticalPosition y) const;
-
-  // Sets the string of an overlay according to its x,y position.
-  void SetOverlay(HorizontalPosition x,
-                  VerticalPosition y,
-                  const std::wstring& input);
-
-  // Replaces the variables in |input| with their actual values according to the
-  // properties of the current printed document and the current printed page.
-  static std::wstring ReplaceVariables(const std::wstring& input,
-                                       const PrintedDocument& document,
-                                       const PrintedPage& page);
-
-  // Keys that are dynamically replaced in the header and footer by their actual
-  // values.
-  // Web page's title.
-  static const wchar_t* const kTitle;
-  // Print job's start time.
-  static const wchar_t* const kTime;
-  // Print job's start date.
-  static const wchar_t* const kDate;
-  // Printed page's number.
-  static const wchar_t* const kPage;
-  // Print job's total page count.
-  static const wchar_t* const kPageCount;
-  // Printed page's number on total page count.
-  static const wchar_t* const kPageOnTotal;
-  // Web page's displayed url.
-  static const wchar_t* const kUrl;
-
-  // Actual headers and footers.
-  std::wstring top_left;
-  std::wstring top_center;
-  std::wstring top_right;
-  std::wstring bottom_left;
-  std::wstring bottom_center;
-  std::wstring bottom_right;
-};
-
-}  // namespace printing
-
-#endif  // PRINTING_PAGE_OVERLAYS_H_