XFA: merge patch from CL 815103002

Update freetype to 2.5.4.

Put freetype into third_party directory, cleaning up header files.

Previously freetype header files are in core/src/fxge/freetype and core/include/thirdparties. There were also multiple fx_freetype.h.

This patch removes the additional Foxit wrapper to make further update easier.

Notice, for original freetype source code, the following files are modified and need to be updated accordingly in future update:

third_party/freetype/include/config/ftmodule.h
third_party/freetype/include/config/ftoption.h

BUG=407341
R=thestig@chromium.org

Review URL: https://codereview.chromium.org/815103002

1 files changed, 129 insertions, 0 deletions

diff --git a/third_party/freetype/include/ftgasp.h b/third_party/freetype/include/ftgasp.h
new file mode 100644
index 0000000000..3f3d765467
--- /dev/null
+++ b/third_party/freetype/include/ftgasp.h
@@ -0,0 +1,129 @@
+/***************************************************************************/
+/*                                                                         */
+/*  ftgasp.h                                                               */
+/*                                                                         */
+/*    Access of TrueType's `gasp' table (specification).                   */
+/*                                                                         */
+/*  Copyright 2007, 2008, 2011 by                                          */
+/*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
+/*                                                                         */
+/*  This file is part of the FreeType project, and may only be used,       */
+/*  modified, and distributed under the terms of the FreeType project      */
+/*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
+/*  this file you indicate that you have read the license and              */
+/*  understand and accept it fully.                                        */
+/*                                                                         */
+/***************************************************************************/
+
+
+#ifndef _FT_GASP_H_
+#define _FT_GASP_H_
+
+#include <ft2build.h>
+#include FT_FREETYPE_H
+
+#ifdef FREETYPE_H
+#error "freetype.h of FreeType 1 has been loaded!"
+#error "Please fix the directory search order for header files"
+#error "so that freetype.h of FreeType 2 is found first."
+#endif
+
+
+  /***************************************************************************
+   *
+   * @section:
+   *   gasp_table
+   *
+   * @title:
+   *   Gasp Table
+   *
+   * @abstract:
+   *   Retrieving TrueType `gasp' table entries.
+   *
+   * @description:
+   *   The function @FT_Get_Gasp can be used to query a TrueType or OpenType
+   *   font for specific entries in its `gasp' table, if any.  This is
+   *   mainly useful when implementing native TrueType hinting with the
+   *   bytecode interpreter to duplicate the Windows text rendering results.
+   */
+
+  /*************************************************************************
+   *
+   * @enum:
+   *   FT_GASP_XXX
+   *
+   * @description:
+   *   A list of values and/or bit-flags returned by the @FT_Get_Gasp
+   *   function.
+   *
+   * @values:
+   *   FT_GASP_NO_TABLE ::
+   *     This special value means that there is no GASP table in this face.
+   *     It is up to the client to decide what to do.
+   *
+   *   FT_GASP_DO_GRIDFIT ::
+   *     Grid-fitting and hinting should be performed at the specified ppem.
+   *     This *really* means TrueType bytecode interpretation.  If this bit
+   *     is not set, no hinting gets applied.
+   *
+   *   FT_GASP_DO_GRAY ::
+   *     Anti-aliased rendering should be performed at the specified ppem.
+   *     If not set, do monochrome rendering.
+   *
+   *   FT_GASP_SYMMETRIC_SMOOTHING ::
+   *     If set, smoothing along multiple axes must be used with ClearType.
+   *
+   *   FT_GASP_SYMMETRIC_GRIDFIT ::
+   *     Grid-fitting must be used with ClearType's symmetric smoothing.
+   *
+   * @note:
+   *   The bit-flags `FT_GASP_DO_GRIDFIT' and `FT_GASP_DO_GRAY' are to be
+   *   used for standard font rasterization only.  Independently of that,
+   *   `FT_GASP_SYMMETRIC_SMOOTHING' and `FT_GASP_SYMMETRIC_GRIDFIT' are to
+   *   be used if ClearType is enabled (and `FT_GASP_DO_GRIDFIT' and
+   *   `FT_GASP_DO_GRAY' are consequently ignored).
+   *
+   *   `ClearType' is Microsoft's implementation of LCD rendering, partly
+   *   protected by patents.
+   *
+   * @since:
+   *   2.3.0
+   */
+#define FT_GASP_NO_TABLE               -1
+#define FT_GASP_DO_GRIDFIT           0x01
+#define FT_GASP_DO_GRAY              0x02
+#define FT_GASP_SYMMETRIC_SMOOTHING  0x08
+#define FT_GASP_SYMMETRIC_GRIDFIT    0x10
+
+
+  /*************************************************************************
+   *
+   * @func:
+   *   FT_Get_Gasp
+   *
+   * @description:
+   *   Read the `gasp' table from a TrueType or OpenType font file and
+   *   return the entry corresponding to a given character pixel size.
+   *
+   * @input:
+   *   face :: The source face handle.
+   *   ppem :: The vertical character pixel size.
+   *
+   * @return:
+   *   Bit flags (see @FT_GASP_XXX), or @FT_GASP_NO_TABLE if there is no
+   *   `gasp' table in the face.
+   *
+   * @since:
+   *   2.3.0
+   */
+  FT_EXPORT( FT_Int )
+  FT_Get_Gasp( FT_Face  face,
+               FT_UInt  ppem );
+
+  /* */
+
+
+#endif /* _FT_GASP_H_ */
+
+
+/* END */