Use libjpeg-turbo by default....

build/common.gypi

 # Copyright (c) 2010 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.
 
 # IMPORTANT:
 # Please don't directly include this file if you are building via gyp_chromium,
 # since gyp_chromium is automatically forcing its inclusion.
 {
   # Variables expected to be overriden on the GYP command line (-D) or by
   # ~/.gyp/include.gypi.
@@ skipping 89 matching lines @@
       # Set Neon compilation flags (only meaningful if armv7==1).
       'arm_neon%': 1,
 
       # The system root for cross-compiles. Default: none.
       'sysroot%': '',
 
       # On Linux, we build with sse2 for Chromium builds.
       'disable_sse2%': 0,
 
       # Use libjpeg-turbo as the JPEG codec used by Chromium.
-      'use_libjpeg_turbo%': 0,
+      'use_libjpeg_turbo%': 1,
 
       # Variable 'component' is for cases where we would like to build some
       # components as dynamic shared libraries but still need variable
       # 'library' for static libraries.
       # By default, component is set to whatever library is set to and
       # it can be overriden by the GYP command line or by ~/.gyp/include.gypi.
       'component%': '<(library)',
 
       # Set to select the Title Case versions of strings in GRD files.
       'use_titlecase_in_grd_files%': 0,
@@ skipping 1391 matching lines @@
     # and therefore SYMROOT, needs to be set at the project level.
     'SYMROOT': '<(DEPTH)/xcodebuild',
   },
 }
 
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 # indent-tabs-mode:nil
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