Revert of Update linux sysroot images from debian/wheezy to debian/jessie (patchset #8 id:140001 of https://codereview.chromium.org/2361223002/ )

Reason for revert:
Broke the linux builder which it seems is still on Precise.

Original issue's description:
> Update linux sysroot images from debian/wheezy to debian/jessie
>
> BUG=564904
>
> Review-Url: https://codereview.chromium.org/2361223002
> Cr-Commit-Position: refs/heads/master@{#456441}
> Committed: 8d4f1d731f

TBR=phajdan.jr@chromium.org,thestig@chromium.org,thomasanderson@google.com,dpranke@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=564904

Review-Url: https://codereview.chromium.org/2743253004
Cr-Original-Commit-Position: refs/heads/master@{#456449}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 189891d210bb98c91e155d4794dffa03d95f1e15

config/sysroot.gni

@@ -16,6 +16,10 @@ declare_args() {
   target_sysroot_dir = ""
 
   use_sysroot = true
+
+  # TODO(tonikitoo): Remove this arg when wheezy is finally dropped and we
+  # can just use debian/jessie everywhere by default. crbug.com/564904.
+  use_jessie_sysroot = false
 }
 
 if (is_linux && target_sysroot_dir != "") {
@@ -53,18 +57,20 @@ if (is_linux && target_sysroot_dir != "") {
     # functionality where possible) needs to run on the buliders, which are
     # running precise.  The precise build has a different set of dependencies
     # from the wheezy build, so we cannot use the wheezy sysroot.
-    # TODO(sbc): This condition can perhaps be eliminated now that we are
-    # using jessie rather than wheezy.
     sysroot = "//build/linux/ubuntu_precise_amd64-sysroot"
   } else {
     if (current_cpu == "x64") {
-      sysroot = "//build/linux/debian_jessie_amd64-sysroot"
+      sysroot = "//build/linux/debian_wheezy_amd64-sysroot"
+
+      if (use_jessie_sysroot) {
+        sysroot = "//build/linux/debian_jessie_amd64-sysroot"
+      }
     } else if (current_cpu == "x86") {
-      sysroot = "//build/linux/debian_jessie_i386-sysroot"
+      sysroot = "//build/linux/debian_wheezy_i386-sysroot"
     } else if (current_cpu == "mipsel") {
-      sysroot = "//build/linux/debian_jessie_mips-sysroot"
+      sysroot = "//build/linux/debian_wheezy_mips-sysroot"
     } else if (current_cpu == "arm") {
-      sysroot = "//build/linux/debian_jessie_arm-sysroot"
+      sysroot = "//build/linux/debian_wheezy_arm-sysroot"
     } else if (current_cpu == "arm64") {
       sysroot = "//build/linux/debian_jessie_arm64-sysroot"
     } else {

linux/sysroot_scripts/install-sysroot.py

@@ -6,17 +6,16 @@
 """Install Debian sysroots for building chromium.
 """
 
-# The sysroot is needed to ensure that binaries that get built will run on
-# the oldest stable version of Debian that we currently support.
-# This script can be run manually but is more often run as part of gclient
-# hooks. When run from hooks this script is a no-op on non-linux platforms.
+# The sysroot is needed to ensure that binaries will run on Debian Wheezy,
+# the oldest supported linux distribution. For ARM64 linux, we have Debian
+# Jessie sysroot as Jessie is the first version with ARM64 support. This script
+# can be run manually but is more often run as part of gclient hooks. When run
+# from hooks this script is a no-op on non-linux platforms.
 
-# The sysroot image could be constructed from scratch based on the current state
-# of the Debian archive but for consistency we use a pre-built root image (we
-# don't want upstream changes to Debian to effect the chromium build until we
-# choose to pull them in). The images will normally need to be rebuilt every
-# time chrome's build dependencies are changed but should also be updated
-# periodically to include upstream security fixes from Debian.
+# The sysroot image could be constructed from scratch based on the current
+# state or Debian Wheezy/Jessie but for consistency we currently use a
+# pre-built root image. The image will normally need to be rebuilt every time
+# chrome's build dependencies are changed.
 
 import hashlib
 import json
@@ -135,6 +134,14 @@ def InstallDefaultSysroots(host_arch):
   if target_arch and target_arch not in (host_arch, 'i386'):
     InstallDefaultSysrootForArch(target_arch)
 
+  # Desktop Linux ozone builds require libxkbcommon* which is not
+  # available in Wheezy.
+  # TODO(thomasanderson): Remove this once the Jessie sysroot is used
+  # by default.
+  gyp_defines = gyp_chromium.GetGypVars(gyp_chromium.GetSupplementalFiles())
+  if gyp_defines.get('use_ozone') == '1':
+    InstallSysroot('Jessie', 'amd64')
+
 
 def main(args):
   parser = optparse.OptionParser('usage: %prog [OPTIONS]', description=__doc__)
@@ -143,9 +150,6 @@ def main(args):
                                         ' Installs default sysroot images.')
   parser.add_option('--arch', type='choice', choices=VALID_ARCHS,
                     help='Sysroot architecture: %s' % ', '.join(VALID_ARCHS))
-  parser.add_option('--all', action='store_true',
-                    help='Install all sysroot images (useful when updating the'
-                         ' images)')
   options, _ = parser.parse_args(args)
   if options.running_as_hook and not sys.platform.startswith('linux'):
     return 0
@@ -156,23 +160,27 @@ def main(args):
     if host_arch in ['ppc','s390']:
       return 0
     InstallDefaultSysroots(host_arch)
-  elif options.arch:
-    InstallDefaultSysrootForArch(options.arch)
-  elif options.all:
-    for arch in VALID_ARCHS:
-      InstallDefaultSysrootForArch(arch)
   else:
-    print 'You much specify either --arch, --all or --running-as-hook'
-    return 1
+    if not options.arch:
+      print 'You much specify either --arch or --running-as-hook'
+      return 1
+    InstallDefaultSysrootForArch(options.arch)
 
   return 0
 
-
 def InstallDefaultSysrootForArch(target_arch):
-  if target_arch not in VALID_ARCHS:
+  if target_arch == 'amd64':
+    InstallSysroot('Wheezy', 'amd64')
+  elif target_arch == 'arm':
+    InstallSysroot('Wheezy', 'arm')
+  elif target_arch == 'arm64':
+    InstallSysroot('Jessie', 'arm64')
+  elif target_arch == 'i386':
+    InstallSysroot('Wheezy', 'i386')
+  elif target_arch == 'mips':
+    InstallSysroot('Wheezy', 'mips')
+  else:
     raise Error('Unknown architecture: %s' % target_arch)
-  InstallSysroot('Jessie', target_arch)
-
 
 def InstallSysroot(target_platform, target_arch):
   # The sysroot directory should match the one specified in build/common.gypi.