bump chromium version and disable use_sysroot

libyuv.gyp

 # Copyright 2011 The LibYuv Project Authors. All rights reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS. All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 {
   'includes': [
     'libyuv.gypi',
   ],
   # Make sure that if we are being compiled to an xcodeproj, nothing tries to
   # include a .pch.
   'xcode_settings': {
     'GCC_PREFIX_HEADER': '',
     'GCC_PRECOMPILE_PREFIX_HEADER': 'NO',
   },
   'variables': {
+    'variables': {
+      # Disable use of sysroot for Linux. It's enabled by default in Chromium,
+      # but it currently lacks the libudev-dev package.
+      # TODO(kjellander): Remove when crbug.com/561584 is fixed.
+      'use_sysroot': 0,

[Sam Clegg, 2016/01/06 18:37:34]

I think this broke the Linux ARM builder, where sysroot is required to be used:
https://build.chromium.org/p/chromium.fyi/builders/Linux%20ARM

Can you tell my why this change was needed?   Is udev actually used by libyuv?  

[kjellander_chromium, 2016/01/11 20:36:03]

Frank was making this change with the assumption that it was needed because
WebRTC was hitting problems with libudev being missing when using sysroots. It's
not used by libyuv so libyuv should be able to use sysroots.

For libyuv, this setting could go into a supplement.gypi file instead, as we do
in WebRTC. Then it won't affect downstream. Just make sure to put it into a
subdirectory, like 'source' or 'util' in this case.
That said, I think it's better to enable the sysroot again. But for the runhooks
step to execute you must then either roll chromium_revision (it only runs as
part of when
https://chromium.googlesource.com/libyuv/libyuv/+/master/sync_chromium.py runs),
or increment the SCRIPT_VERSION number in that file.

+    },
+    'use_sysroot%': '<(use_sysroot)',
     'use_system_libjpeg%': 0,
     'libyuv_disable_jpeg%': 0,
     # 'chromium_code' treats libyuv as internal and increases warning level.
     'chromium_code': 1,
     # Link-Time Optimizations.
     'use_lto%': 0,
     'build_neon': 0,
     'conditions': [
        ['(target_arch == "armv7" or target_arch == "armv7s" or \
        (target_arch == "arm" and arm_version >= 7) or target_arch == "arm64")\
@@ skipping 108 matching lines @@
       ],
     },
   ], # targets.
 }
 
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