Create a stub chrome executable that crashes when run.

base/base_lib.scons

 # 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.
 
 __doc__ = """
 Configuration for building base.lib / libbase.a.
 """
 
 Import('env')
 
@@ skipping 259 matching lines @@
 ])
 
 if env.Bit('posix'):
   # Remove files that still need to be ported from the input_files list.
   # TODO(port): delete files from this list as they get ported.
   input_files.Remove(
     'clipboard_util.cc',
     'event_recorder.cc',
     'file_version_info.cc',
 
-    # We have an implementation of idle_timer, but it's unclear if we want it
-    # yet, so it's commented out for now.  Leave this 'unported'.
+    # We have an implementation of idle_timer that depends on XScreenSaver,
+    # but it's unclear if we want it yet, so it's commented out for now.
+    # Leave this 'unported'.
     'idle_timer.cc',
 
     'object_watcher.cc',
 
     'resource_util.cc',  # Uses HMODULE, but may be abstractable.
   )
 
+  input_files.Append(
+    # See above note about idle_timer.cc.
+    'idle_timer_none.cc',
+  )
+
 if not env.Bit('windows'):
   # Remove windows-specific files on non-Windows platforms.
   # TODO(sgk):
   # Remove the windows-specific files from the input_files list above
   # and turn this back in to an add-on-Windows list (like we used to)
   # once we're comfortable re-ordering the files in the generated
   # .vcproj file(s).
   input_files.Remove(
       'base_drag_source.cc',
       'base_drop_target.cc',
@@ skipping 160 matching lines @@
     tools=[
         MSVSTool('VCCLCompilerTool', DisableSpecificWarnings='4102'),
     ])
 
 p.AddFileConfig(
     'third_party/dmg_fp/g_fmt.cc',
     'Release|Win32',
     tools=[
         MSVSTool('VCCLCompilerTool', DisableSpecificWarnings='4102'),
     ])