Refactor some more BrowserMain code. Move core code that's required by all embedders to content.

chrome/chrome_browser.gypi

 # Copyright (c) 2011 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.
 
 {
   'targets': [
     {
       'target_name': 'browser',
       'type': 'static_library',
       'dependencies': [
@@ skipping 4137 matching lines @@
             ['use_openssl==0', {
               'sources': [
                 'third_party/mozilla_security_manager/nsNSSCertHelper.cpp',
                 'third_party/mozilla_security_manager/nsNSSCertHelper.h',
                 'third_party/mozilla_security_manager/nsNSSCertificate.cpp',
                 'third_party/mozilla_security_manager/nsNSSCertificate.h',
                 'third_party/mozilla_security_manager/nsUsageArrayHelper.cpp',
                 'third_party/mozilla_security_manager/nsUsageArrayHelper.h',
               ],
             }],
-            ['linux_sandbox_path != ""', {
-              'defines': [
-                'LINUX_SANDBOX_PATH="<(linux_sandbox_path)"',
-              ],
-            }],
           ],
         }, {  # toolkit_uses_gtk != 1
           'sources!': [
             # TODO(mattm): Cert manager stuff is really !USE_NSS.
             'browser/certificate_manager_model.cc',
             'browser/certificate_manager_model.h',
             'browser/ui/webui/options/certificate_manager_handler.cc',
             'browser/ui/webui/options/certificate_manager_handler.h',
           ],
         }],
@@ skipping 866 matching lines @@
               # weak imports in dependents, who still must #include
               # closure_blocks_leopard_compat.h to get weak imports.
               'type': 'none',
             }],
           ],
         },
       ],
     }],
   ],
 }