Replace agg with skia

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.
 
-pdf_use_skia = false
-
 config("pdfium_config") {
   cflags = []
   defines = [
     "FOXIT_CHROME_BUILD",
     "_FXFT_VERSION_=2501",
     "_FPDFSDK_LIB",
     "_NO_GDIPLUS_",  # workaround text rendering issues on Windows
   ]
 
-  if (pdf_use_skia) {
-    defines += [ "_SKIA_SUPPORT_" ]
-  }
-
   if (is_linux) {
     if (cpu_arch == "x64") {
       defines += [ "_FX_CPU_=_FX_X64_" ]
       cflags += [ "-fPIC" ]
     } else if (cpu_arch == "x86") {
       defines += [ "_FX_CPU_=_FX_X86_" ]
     }
   }
 
   if (is_win) {
@@ skipping 516 matching lines @@
 
 static_library("fxge") {
   sources = [
     "core/include/fxge/fpf.h",
     "core/include/fxge/fx_dib.h",
     "core/include/fxge/fx_font.h",
     "core/include/fxge/fx_freetype.h",
     "core/include/fxge/fx_ge.h",
     "core/include/fxge/fx_ge_apple.h",
     "core/include/fxge/fx_ge_win32.h",
-    "core/src/fxge/agg/include/fxfx_agg_basics.h",
-    "core/src/fxge/agg/include/fxfx_agg_clip_liang_barsky.h",
-    "core/src/fxge/agg/include/fxfx_agg_conv_dash.h",
-    "core/src/fxge/agg/include/fxfx_agg_conv_stroke.h",
-    "core/src/fxge/agg/include/fxfx_agg_curves.h",
-    "core/src/fxge/agg/include/fxfx_agg_path_storage.h",
-    "core/src/fxge/agg/include/fxfx_agg_rasterizer_scanline_aa.h",
-    "core/src/fxge/agg/include/fxfx_agg_renderer_scanline.h",
-    "core/src/fxge/agg/include/fxfx_agg_rendering_buffer.h",
-    "core/src/fxge/agg/include/fxfx_agg_scanline_u.h",
-    "core/src/fxge/agg/include/fx_agg_driver.h",
-    "core/src/fxge/agg/src/fxfx_agg_curves.cpp",
-    "core/src/fxge/agg/src/fxfx_agg_driver.cpp",
-    "core/src/fxge/agg/src/fxfx_agg_path_storage.cpp",
-    "core/src/fxge/agg/src/fxfx_agg_rasterizer_scanline_aa.cpp",
-    "core/src/fxge/agg/src/fxfx_agg_vcgen_dash.cpp",
-    "core/src/fxge/agg/src/fxfx_agg_vcgen_stroke.cpp",
     "core/src/fxge/android/fpf_skiafont.cpp",
     "core/src/fxge/android/fpf_skiafont.h",
     "core/src/fxge/android/fpf_skiafontmgr.cpp",
     "core/src/fxge/android/fpf_skiafontmgr.h",
     "core/src/fxge/android/fpf_skiamodule.cpp",
     "core/src/fxge/android/fpf_skiamodule.h",
     "core/src/fxge/android/fx_android_font.cpp",
     "core/src/fxge/android/fx_android_font.h",
     "core/src/fxge/android/fx_android_imp.cpp",
     "core/src/fxge/android/fx_fpf.h",
@@ skipping 53 matching lines @@
     "core/src/fxge/fx_freetype/src/fxft_type1cid.c",
     "core/src/fxge/ge/fx_ge.cpp",
     "core/src/fxge/ge/fx_ge_device.cpp",
     "core/src/fxge/ge/fx_ge_font.cpp",
     "core/src/fxge/ge/fx_ge_fontmap.cpp",
     "core/src/fxge/ge/fx_ge_linux.cpp",
     "core/src/fxge/ge/fx_ge_path.cpp",
     "core/src/fxge/ge/fx_ge_ps.cpp",
     "core/src/fxge/ge/fx_ge_text.cpp",
     "core/src/fxge/ge/text_int.h",
+    "core/src/fxge/skia/fx_skia_blitter.cpp",
+    "core/src/fxge/skia/fx_skia_driver.cpp",
   ]
 
   configs -= [ "//build/config/compiler:chromium_code" ]
   if (is_posix) {
     configs -= [ "//build/config/gcc:no_exceptions" ]
   }
   configs += [ ":pdfium_config", "//build/config/compiler:no_chromium_code" ]
 
-  if (pdf_use_skia) {
-    sources = [
-      "core/src/fxge/skia/fx_skia_blitter_new.cpp",
-      "core/src/fxge/skia/fx_skia_device.cpp",
-    ]
-    include_dirs = [
-      "//third_party/skia/include/config",
-      "//third_party/skia/include/core",
-      "//third_party/skia/include/effects",
-      "//third_party/skia/include/images",
-      "//third_party/skia/include/lazy",
-      "//third_party/skia/include/pathops",
-      "//third_party/skia/include/utils",
-      "//third_party/skia/src/core",
-    ]
-    deps = [ "//skia" ]
-  }
+  deps = [ "//skia" ]
 
   if (is_win) {
     sources += [
       "core/src/fxge/win32/dwrite_int.h",
       "core/src/fxge/win32/fx_win32_device.cpp",
       "core/src/fxge/win32/fx_win32_dib.cpp",
       "core/src/fxge/win32/fx_win32_dwrite.cpp",
       "core/src/fxge/win32/fx_win32_gdipext.cpp",
       "core/src/fxge/win32/fx_win32_print.cpp",
       "core/src/fxge/win32/win32_int.h",
@@ skipping 177 matching lines @@
     "fpdfsdk/src/formfiller/FFL_RadioButton.cpp",
     "fpdfsdk/src/formfiller/FFL_TextField.cpp",
     "fpdfsdk/src/formfiller/FFL_Utils.cpp",
   ]
   configs -= [ "//build/config/compiler:chromium_code" ]
   if (is_posix) {
     configs -= [ "//build/config/gcc:no_exceptions" ]
   }
   configs += [ ":pdfium_config", "//build/config/compiler:no_chromium_code" ]
 }