Change SK_GAMMA_CONTRAST in Windows from 0.5 to 1.0.

skia/BUILD.gn

 # Copyright (c) 2013 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/features.gni")
 import("//build/config/ui.gni")
 import("//printing/features/features.gni")
 import("//testing/test.gni")
 import("//third_party/skia/gn/shared_sources.gni")
 
@@ skipping 131 matching lines @@
     ]
   } else if (is_android) {
     defines += [
       "SK_GAMMA_APPLY_TO_A8",
       "SK_GAMMA_EXPONENT=1.4",
       "SK_GAMMA_CONTRAST=0.0",
     ]
   } else if (is_win) {
     defines += [
       "SK_GAMMA_SRGB",
-      "SK_GAMMA_CONTRAST=0.5",
+      "SK_GAMMA_CONTRAST=1.0",
     ]
   } else if (is_mac) {
     defines += [
       "SK_GAMMA_SRGB",
       "SK_GAMMA_CONTRAST=0.0",
     ]
   }
 
   if (is_android) {
     defines += [
@@ skipping 562 matching lines @@
 
     deps = [
       ":skia",
       "//base",
       "//base/test:test_support",
       "//build/config/sanitizers:deps",
       "//build/win:default_exe_manifest",
     ]
   }
 }