Revert of [devtools] Support different encodings for Page.CaptureScreenshot.

ui/gfx/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("//build/config/ui.gni")
 import("//testing/test.gni")
 import("//testing/libfuzzer/fuzzer_test.gni")
 
 if (is_android) {
   import("//build/config/android/config.gni")
@@ skipping 101 matching lines @@
     "image/image_skia_rep.h",
     "image/image_skia_source.cc",
     "image/image_skia_source.h",
     "image/image_skia_util_ios.h",
     "image/image_skia_util_ios.mm",
     "image/image_skia_util_mac.h",
     "image/image_skia_util_mac.mm",
     "image/image_util.cc",
     "image/image_util.h",
     "image/image_util_ios.mm",
-    "image/image_util_mac.mm",
     "interpolated_transform.cc",
     "interpolated_transform.h",
     "ios/NSString+CrStringDrawing.h",
     "ios/NSString+CrStringDrawing.mm",
     "ios/uikit_util.h",
     "ios/uikit_util.mm",
     "linux_font_delegate.cc",
     "linux_font_delegate.h",
     "mac/coordinate_conversion.h",
     "mac/coordinate_conversion.mm",
@@ skipping 611 matching lines @@
 
 fuzzer_test("color_transform_fuzztest") {
   sources = [
     "color_transform_fuzzer.cc",
   ]
   deps = [
     ":gfx",
   ]
   libfuzzer_options = [ "max_len=1024" ]
 }