Switch ChromeOS Chromium login to use IJG libjpeg

ui/gfx/BUILD.gn

Index: ui/gfx/BUILD.gn
diff --git a/ui/gfx/BUILD.gn b/ui/gfx/BUILD.gn
index 43a7d7aa360cd2fa0e61d42227c722f05986846c..3440c18b7826dd91a07a52ee427a08a043a5b585 100644
--- a/ui/gfx/BUILD.gn
+++ b/ui/gfx/BUILD.gn
@@ -326,6 +326,16 @@ component("gfx") {
     configs += [ "//build/config/linux:fontconfig" ]
   }
 
+  # Chrome OS
+  if (is_chromeos) {
+    # Robust JPEG decoding for the login screen.
+    sources += [
+      "chromeos/codec/jpeg_codec_robust_slow.cc",
+      "chromeos/codec/jpeg_codec_robust_slow.h",
+    ]
+    deps += [ "//third_party/libjpeg" ]
+  }
+
   if (!use_aura) {
     sources -= [
       "path_aura.cc",
@@ -501,6 +511,10 @@ test("gfx_unittests") {
     sources -= [ "nine_image_painter_unittest.cc" ]
   }
 
+  if (is_chromeos) {
+    sources += [ "chromeos/codec/jpeg_codec_robust_slow_unittest.cc" ]
+  }
+
   if (is_win) {
     sources += [
       "color_profile_win_unittest.cc",