Add a official build target for Linux, builds with OFFICIAL_BUILD.

build/SConscript.main

 # Copyright (c) 2006-2008 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 os
 import shutil
 import sys
 
 
 if sys.platform == 'win32':
@@ skipping 486 matching lines @@
         '$SANDBOX_DIR/sandbox.scons',
     ],
 )
 
 linux_env.Append(
     # We need rt for clock_gettime.
     LIBS = ['rt'],
 
     ICU_LIBS = ['icu'],
 )
+
+# Build an "official" build (DCHECKs completely compiled out, etc).
+if ARGUMENTS.get('OFFICIAL') == '1':
+  linux_env.Append(CPPDEFINES=['OFFICIAL_BUILD'])
+
 # Build with support for gcov when COVERAGE=1.
 if ARGUMENTS.get('COVERAGE') == '1':
   linux_env.Append(CCFLAGS=['-fprofile-arcs', '-ftest-coverage'])
   linux_env.Append(LINKFLAGS=['-fprofile-arcs'])
 
 # Build with support for gprof when PROFILE=1.
 if ARGUMENTS.get('PROFILE') == '1':
   linux_env.Append(CCFLAGS=['-pg', '-g'])
   linux_env.Append(LINKFLAGS=['-pg'])
 
@@ skipping 294 matching lines @@
         'all_libraries',
         'all_languages',
         'all_programs',
         'all_test_programs',
     ], projects = [p],
     COMPONENT_VS_PROJECT_SCRIPT_PATH=(
         'cd $$(ProjectDir)/$VS_PROJECT_TO_MAIN_DIR && hammer.bat'),
 )
 
 # -------------------------------------------------------------------------