Add a snapshot of flutter/engine/src/build to our sdk

build/mac/find_sdk.py

Index: build/mac/find_sdk.py
diff --git a/runtime/tools/gyp/find_mac_sdk.py b/build/mac/find_sdk.py
similarity index 77%
copy from runtime/tools/gyp/find_mac_sdk.py
copy to build/mac/find_sdk.py
index baf627981e6ab59df8ab8dbfad6f0f0c8894f063..0534766e8077e763521882156c45aef95ae6628b 100755
--- a/runtime/tools/gyp/find_mac_sdk.py
+++ b/build/mac/find_sdk.py
@@ -3,24 +3,18 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-# Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
-# for details. All rights reserved. Use of this source code is governed by a
-# BSD-style license that can be found in the LICENSE file.
+"""Prints the lowest locally available SDK version greater than or equal to a
+given minimum sdk version to standard output.
 
-# This file is a copy of Chromium's src/build/mac/find_sdk.py.
-# Revision 180337.
+Usage:
+  python find_sdk.py 10.6  # Ignores SDKs < 10.6
+"""
 
 import os
 import re
 import subprocess
 import sys
 
-"""Prints the lowest locally available SDK version greater than or equal to a
-given minimum sdk version to standard output.
-
-Usage:
-  python find_sdk.py 10.6  # Ignores SDKs < 10.6
-"""
 
 from optparse import OptionParser
 
@@ -38,6 +32,9 @@ def main():
   parser.add_option("--sdk_path",
                     action="store", type="string", dest="sdk_path", default="",
                     help="user-specified SDK path; bypasses verification")
+  parser.add_option("--print_sdk_path",
+                    action="store_true", dest="print_sdk_path", default=False,
+                    help="Additionaly print the path the SDK (appears first).")
   (options, args) = parser.parse_args()
   min_sdk_version = args[0]
 
@@ -46,8 +43,8 @@ def main():
                          stderr=subprocess.STDOUT)
   out, err = job.communicate()
   if job.returncode != 0:
-    print >>sys.stderr, out
-    print >>sys.stderr, err
+    print >> sys.stderr, out
+    print >> sys.stderr, err
     raise Exception(('Error %d running xcode-select, you might have to run '
       '|sudo xcode-select --switch /Applications/Xcode.app/Contents/Developer| '
       'if you are using Xcode 4.') % job.returncode)
@@ -67,19 +64,23 @@ def main():
   best_sdk = sorted(sdks, key=parse_version)[0]
 
   if options.verify and best_sdk != min_sdk_version and not options.sdk_path:
-    print >>sys.stderr, ''
-    print >>sys.stderr, '                                           vvvvvvv'
-    print >>sys.stderr, ''
-    print >>sys.stderr, \
+    print >> sys.stderr, ''
+    print >> sys.stderr, '                                           vvvvvvv'
+    print >> sys.stderr, ''
+    print >> sys.stderr, \
         'This build requires the %s SDK, but it was not found on your system.' \
         % min_sdk_version
-    print >>sys.stderr, \
+    print >> sys.stderr, \
         'Either install it, or explicitly set mac_sdk in your GYP_DEFINES.'
-    print >>sys.stderr, ''
-    print >>sys.stderr, '                                           ^^^^^^^'
-    print >>sys.stderr, ''
+    print >> sys.stderr, ''
+    print >> sys.stderr, '                                           ^^^^^^^'
+    print >> sys.stderr, ''
     return min_sdk_version
 
+  if options.print_sdk_path:
+    print subprocess.check_output(['xcodebuild', '-version', '-sdk',
+                                   'macosx' + best_sdk, 'Path']).strip()
+
   return best_sdk