Remove core/src/fpdfapi/fpdf_font/common.h and use stdint types.

BUILD.gn

 # Copyright 2014 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.
 
 import("//testing/test.gni")
 import("pdfium.gni")
 
 config("pdfium_config") {
   cflags = []
   include_dirs = [
@@ skipping 282 matching lines @@
     "core/src/fpdfapi/fpdf_cmaps/Korea1/UniKS-UCS2-V_1.cpp",
     "core/src/fpdfapi/fpdf_cmaps/Korea1/UniKS-UTF16-H_0.cpp",
     "core/src/fpdfapi/fpdf_cmaps/Korea1/cmaps_korea1.cpp",
     "core/src/fpdfapi/fpdf_cmaps/cmap_int.h",
     "core/src/fpdfapi/fpdf_cmaps/fpdf_cmaps.cpp",
     "core/src/fpdfapi/fpdf_edit/editint.h",
     "core/src/fpdfapi/fpdf_edit/fpdf_edit_content.cpp",
     "core/src/fpdfapi/fpdf_edit/fpdf_edit_create.cpp",
     "core/src/fpdfapi/fpdf_edit/fpdf_edit_doc.cpp",
     "core/src/fpdfapi/fpdf_edit/fpdf_edit_image.cpp",
-    "core/src/fpdfapi/fpdf_font/common.h",
     "core/src/fpdfapi/fpdf_font/font_int.h",
     "core/src/fpdfapi/fpdf_font/fpdf_font.cpp",
     "core/src/fpdfapi/fpdf_font/fpdf_font_charset.cpp",
     "core/src/fpdfapi/fpdf_font/fpdf_font_cid.cpp",
     "core/src/fpdfapi/fpdf_font/ttgsubtable.cpp",
     "core/src/fpdfapi/fpdf_font/ttgsubtable.h",
     "core/src/fpdfapi/fpdf_page/fpdf_page.cpp",
     "core/src/fpdfapi/fpdf_page/fpdf_page_colors.cpp",
     "core/src/fpdfapi/fpdf_page/fpdf_page_doc.cpp",
     "core/src/fpdfapi/fpdf_page/fpdf_page_func.cpp",
@@ skipping 461 matching lines @@
       "//v8",
       "//v8:v8_libplatform",
     ]
     include_dirs += [
       "//v8",
       "//v8/include",
     ]
   }
   configs += [ ":pdfium_config" ]
 }