Use a sysroot for Chrome Linux official builds.

build/common.gypi

 # Copyright (c) 2012 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 43 matching lines @@
           # Override buildtype to select the desired build flavor.
           # Dev - everyday build for development/testing
           # Official - release build (generally implies additional processing)
           # TODO(mmoss) Once 'buildtype' is fully supported (e.g. Windows gyp
           # conversion is done), some of the things which are now controlled by
           # 'branding', such as symbol generation, will need to be refactored
           # based on 'buildtype' (i.e. we don't care about saving symbols for
           # non-Official # builds).
           'buildtype%': 'Dev',
 
+          # Override branding to select the desired branding flavor.
+          'branding%': 'Chromium',
+
           'conditions': [
             # ChromeOS implies ash.
             ['chromeos==1', {
               'use_ash%': 1,
               'use_aura%': 1,
             }],
 
             # For now, Windows builds that |use_aura| should also imply using
             # ash. This rule should be removed for the future when Windows is
             # using the aura windows without the ash interface.
@@ skipping 20 matching lines @@
         # Copy conditionally-set variables out one scope.
         'chromeos%': '<(chromeos)',
         'use_aura%': '<(use_aura)',
         'use_ash%': '<(use_ash)',
         'use_ozone%': '<(use_ozone)',
         'use_openssl%': '<(use_openssl)',
         'enable_viewport%': '<(enable_viewport)',
         'enable_hidpi%': '<(enable_hidpi)',
         'enable_touch_ui%': '<(enable_touch_ui)',
         'buildtype%': '<(buildtype)',
+        'branding%': '<(branding)',
         'host_arch%': '<(host_arch)',
 
         # Default architecture we're building for is the architecture we're
         # building on.
         'target_arch%': '<(host_arch)',
 
         # This is set when building the Android WebView inside the Android
         # build system, using the 'android' gyp backend. The WebView code is
         # still built when this is unset, but builds using the normal chromium
         # build system.
@@ skipping 47 matching lines @@
             'enable_message_center%': 1,
           }, {
             'enable_message_center%': 0,
           }],
 
           ['use_aura==1 or (OS!="win" and OS!="mac" and OS!="ios" and OS!="android")', {
             'use_default_render_theme%': 1,
           }, {
             'use_default_render_theme%': 0,
           }],
+
+          # TODO(thestig) Remove the linux_lsb_release check after all the
+          # official Ubuntu Lucid builder are gone.
+          ['OS=="linux" and branding=="Chrome" and buildtype=="Official" and chromeos==0', {
+            'linux_lsb_release%': '<!(lsb_release -r -s)',
+          }, {
+            'linux_lsb_release%': '',
+          }], # OS=="linux" and branding=="Chrome" and buildtype=="Official" and chromeos==0
         ],
       },
 
       # Copy conditionally-set variables out one scope.
       'chromeos%': '<(chromeos)',
       'host_arch%': '<(host_arch)',
       'target_arch%': '<(target_arch)',
       'toolkit_views%': '<(toolkit_views)',
       'toolkit_uses_gtk%': '<(toolkit_uses_gtk)',
       'use_aura%': '<(use_aura)',
       'use_ash%': '<(use_ash)',
       'use_ozone%': '<(use_ozone)',
       'use_openssl%': '<(use_openssl)',
       'enable_viewport%': '<(enable_viewport)',
       'enable_hidpi%': '<(enable_hidpi)',
       'enable_touch_ui%': '<(enable_touch_ui)',
       'android_webview_build%': '<(android_webview_build)',
       'google_tv%': '<(google_tv)',
       'inside_chromium_build%': '<(inside_chromium_build)',
       'enable_app_list%': '<(enable_app_list)',
       'enable_message_center%': '<(enable_message_center)',
       'use_default_render_theme%': '<(use_default_render_theme)',
       'buildtype%': '<(buildtype)',
+      'branding%': '<(branding)',
       'arm_version%': '<(arm_version)',
-
-      # Override branding to select the desired branding flavor.
-      'branding%': 'Chromium',
+      'linux_lsb_release%': '<(linux_lsb_release)',
 
       # Set to 1 to enable fast builds. Set to 2 for even faster builds
       # (it disables debug info for fastest compilation - only for use
       # on compile-only bots).
       'fastbuild%': 0,
 
       # Set to 1 to enable dcheck in release without having to use the flag.
       'dcheck_always_on%': 0,
 
       # Disable file manager component extension by default.
@@ skipping 414 matching lines @@
 
         ['OS=="linux" and target_arch=="arm" and chromeos==0', {
           # Set some defaults for arm/linux chrome builds
           'linux_breakpad%': 0,
           'linux_use_tcmalloc%': 0,
           # sysroot needs to be an absolute path otherwise it generates
           # incorrect results when passed to pkg-config
           'sysroot%': '<!(cd <(DEPTH) && pwd -P)/arm-sysroot',
         }], # OS=="linux" and target_arch=="arm" and chromeos==0
 
+        ['linux_lsb_release=="12.04"', {
+          'conditions': [
+            ['target_arch=="x64"', {
+              'sysroot%': '<!(cd <(DEPTH) && pwd -P)/chrome/installer/linux/internal/debian_wheezy_amd64-sysroot',
+            }],
+            ['target_arch=="ia32"', {
+              'sysroot%': '<!(cd <(DEPTH) && pwd -P)/chrome/installer/linux/internal/debian_wheezy32-sysroot',
+            }],
+        ],
+        }], # linux_lsb_release=="12.04"
+
         ['target_arch=="mipsel"', {
           'sysroot%': '<!(cd <(DEPTH) && pwd -P)/mipsel-sysroot/sysroot',
           'CXX%': '<!(cd <(DEPTH) && pwd -P)/mipsel-sysroot/bin/mipsel-linux-gnu-gcc',
         }],
 
         # Whether tests targets should be run, archived or just have the
         # dependencies verified. All the tests targets have the '_run' suffix,
         # e.g. base_unittests_run runs the target base_unittests. The test
         # target always calls tools/swarm_client/isolate.py. See the script's
         # --help for more information and the valid --mode values. Meant to be
@@ skipping 3797 matching lines @@
     # settings in target dicts.  SYMROOT is a special case, because many other
     # Xcode variables depend on it, including variables such as
     # PROJECT_DERIVED_FILE_DIR.  When a source group corresponding to something
     # like PROJECT_DERIVED_FILE_DIR is added to a project, in order for the
     # files to appear (when present) in the UI as actual files and not red
     # red "missing file" proxies, the correct path to PROJECT_DERIVED_FILE_DIR,
     # and therefore SYMROOT, needs to be set at the project level.
     'SYMROOT': '<(DEPTH)/xcodebuild',
   },
 }