Remove LSMinimumSystemVersion from content/shell's Info.plists, hardcode 10.9 in the installer's In…

chrome/installer/mac/app/BUILD.gn

 # Copyright 2016 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/mac/rules.gni")
 import("//build/util/branding.gni")
 import("//testing/test.gni")
 
 source_set("mac_installer_base") {
   visibility = [ ":*" ]
@@ skipping 15 matching lines @@
     "Unpacker.h",
     "Unpacker.m",
   ]
   public_configs = [ "//build/config/compiler:enable_arc" ]
 }
 
 mac_app_bundle("mac_installer_app") {
   output_name = "$chrome_product_installer_full_name"
   info_plist = "Info.plist"
   extra_substitutions = [
-    "MACOSX_DEPLOYMENT_TARGET=10.9",
     "PRODUCT_INSTALLER_FULLNAME=$chrome_product_installer_full_name",
     "CHROMIUM_BUNDLE_ID=$chrome_mac_bundle_id",
   ]
   sources = [
     "AppDelegate.h",
     "AppDelegate.mm",
     "AuthorizedInstall.h",
     "AuthorizedInstall.m",
     "InstallerWindowController.h",
     "InstallerWindowController.m",
@@ skipping 47 matching lines @@
     "DiskArbitration.framework",
     "Security.framework",
   ]
   data = [
     "//chrome/test/data/mac_installer/requestCheck.dtd",
     "//chrome/test/data/mac_installer/requestSample.xml",
     "//chrome/test/data/mac_installer/responseExample.xml",
     "//chrome/test/data/mac_installer/test-dmg.dmg",
   ]
 }