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, 170 insertions, 0 deletions

diff --git a/third_party/freetype/include/ftttdrv.h b/third_party/freetype/include/ftttdrv.h
new file mode 100644
index 0000000000..358841397c
--- /dev/null
+++ b/third_party/freetype/include/ftttdrv.h
@@ -0,0 +1,170 @@
+/***************************************************************************/
+/*                                                                         */
+/*  ftttdrv.h                                                              */
+/*                                                                         */
+/*    FreeType API for controlling the TrueType driver                     */
+/*    (specification only).                                                */
+/*                                                                         */
+/*  Copyright 2013 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 __FTTTDRV_H__
+#define __FTTTDRV_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
+
+
+FT_BEGIN_HEADER
+
+
+  /**************************************************************************
+   *
+   * @section:
+   *   tt_driver
+   *
+   * @title:
+   *   The TrueType driver
+   *
+   * @abstract:
+   *   Controlling the TrueType driver module.
+   *
+   * @description:
+   *   While FreeType's TrueType driver doesn't expose API functions by
+   *   itself, it is possible to control its behaviour with @FT_Property_Set
+   *   and @FT_Property_Get.  The following lists the available properties
+   *   together with the necessary macros and structures.
+   *
+   *   The TrueType driver's module name is `truetype'.
+   *
+   */
+
+
+  /**************************************************************************
+   *
+   * @property:
+   *   interpreter-version
+   *
+   * @description:
+   *   Currently, two versions are available, representing the bytecode
+   *   interpreter with and without subpixel hinting support,
+   *   respectively.  The default is subpixel support if
+   *   TT_CONFIG_OPTION_SUBPIXEL_HINTING is defined, and no subpixel
+   *   support otherwise (since it isn't available then).
+   *
+   *   If subpixel hinting is on, many TrueType bytecode instructions
+   *   behave differently compared to B/W or grayscale rendering.  The
+   *   main idea is to render at a much increased horizontal resolution,
+   *   then sampling down the created output to subpixel precision.
+   *   However, many older fonts are not suited to this and must be
+   *   specially taken care of by applying (hardcoded) font-specific
+   *   tweaks.
+   *
+   *   Details on subpixel hinting and some of the necessary tweaks can be
+   *   found in Greg Hitchcock's whitepaper at
+   *   `http://www.microsoft.com/typography/cleartype/truetypecleartype.aspx'.
+   *
+   *   The following example code demonstrates how to activate subpixel
+   *   hinting (omitting the error handling).
+   *
+   *   {
+   *     FT_Library  library;
+   *     FT_Face     face;
+   *     FT_UInt     interpreter_version = TT_INTERPRETER_VERSION_38;
+   *
+   *
+   *     FT_Init_FreeType( &library );
+   *
+   *     FT_Property_Set( library, "truetype",
+   *                               "interpreter-version",
+   *                               &interpreter_version );
+   *   }
+   *
+   * @note:
+   *   This property can be used with @FT_Property_Get also.
+   *
+   */
+
+
+  /**************************************************************************
+   *
+   * @enum:
+   *   TT_INTERPRETER_VERSION_XXX
+   *
+   * @description:
+   *   A list of constants used for the @interpreter-version property to
+   *   select the hinting engine for Truetype fonts.
+   *
+   *   The numeric value in the constant names represents the version
+   *   number as returned by the `GETINFO' bytecode instruction.
+   *
+   * @values:
+   *   TT_INTERPRETER_VERSION_35 ::
+   *     Version~35 corresponds to MS rasterizer v.1.7 as used e.g. in
+   *     Windows~98; only grayscale and B/W rasterizing is supported.
+   *
+   *   TT_INTERPRETER_VERSION_38 ::
+   *     Version~38 corresponds to MS rasterizer v.1.9; it is roughly
+   *     equivalent to the hinting provided by DirectWrite ClearType (as
+   *     can be found, for example, in the Internet Explorer~9 running on
+   *     Windows~7).
+   *
+   * @note:
+   *   This property controls the behaviour of the bytecode interpreter
+   *   and thus how outlines get hinted.  It does *not* control how glyph
+   *   get rasterized!  In particular, it does not control subpixel color
+   *   filtering.
+   *
+   *   If FreeType has not been compiled with configuration option
+   *   FT_CONFIG_OPTION_SUBPIXEL_HINTING, selecting version~38 causes an
+   *   `FT_Err_Unimplemented_Feature' error.
+   *
+   *   Depending on the graphics framework, Microsoft uses different
+   *   bytecode engines.  As a consequence, the version numbers returned by
+   *   a call to the `GETINFO[1]' bytecode instruction are more convoluted
+   *   than desired.
+   *
+   *   {
+   *      framework   Windows version   result of GETINFO[1]
+   *     ----------------------------------------------------
+   *       GDI         before XP         35
+   *       GDI         XP and later      37
+   *       GDI+ old    before Vista      37
+   *       GDI+ old    Vista, 7          38
+   *       GDI+        after 7           40
+   *       DWrite      before 8          39
+   *       DWrite      8 and later       40
+   *   }
+   *
+   *   Since FreeType doesn't provide all capabilities of DWrite ClearType,
+   *   using version~38 seems justified.
+   *
+   */
+#define TT_INTERPRETER_VERSION_35  35
+#define TT_INTERPRETER_VERSION_38  38
+
+ /* */
+
+
+FT_END_HEADER
+
+
+#endif /* __FTTTDRV_H__ */
+
+
+/* END */