Add about:memory support for Linux....

chrome/chrome.gyp

 # Copyright (c) 2009 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.
 
 {
   'variables': {
     'chromium_code': 1,
     # Define the common dependencies that contain all the actual
     # Chromium functionality.  This list gets pulled in below by
     # the link of the actual chrome (or chromium) executable on
@@ skipping 1274 matching lines @@
         'browser/language_order_table_model.cc',
         'browser/language_order_table_model.h',
         'browser/load_from_memory_cache_details.h',
         'browser/load_notification_details.h',
         'browser/location_bar.h',
         'browser/login_prompt.cc',
         'browser/login_prompt.h',
         'browser/login_prompt_gtk.cc',
         'browser/login_prompt_win.cc',
         'browser/memory_details.cc',
+        'browser/memory_details_linux.cc',
+        'browser/memory_details_win.cc',
         'browser/memory_details.h',
         'browser/meta_table_helper.cc',
         'browser/meta_table_helper.h',
         'browser/metrics/metrics_log.cc',
         'browser/metrics/metrics_log.h',
         'browser/metrics/metrics_response.cc',
         'browser/metrics/metrics_response.h',
         'browser/metrics/metrics_service.cc',
         'browser/metrics/metrics_service.h',
         'browser/metrics/user_metrics.cc',
@@ skipping 666 matching lines @@
         ['OS=="mac"', {
           'sources!': [
             'browser/automation/automation_provider_list_generic.cc',
             'browser/bookmarks/bookmark_context_menu.cc',
             'browser/bookmarks/bookmark_drop_info.cc',
             'browser/dock_info.cc',
             'browser/download/download_exe.cc',
             'browser/download/download_request_dialog_delegate_win.cc',
             'browser/jankometer.cc',
             'browser/login_prompt.cc',
+            'browser/memory_details.cc',
             'browser/password_manager/password_store_gnome.h',
             'browser/password_manager/password_store_gnome.cc',
             'browser/password_manager/password_store_kwallet.h',
             'browser/password_manager/password_store_kwallet.cc',
             'browser/password_manager/password_store_win.cc',
             'browser/password_manager/password_store_win.h',
             'browser/views/extensions/extension_shelf.cc',
             'browser/views/extensions/extension_shelf.h',
             'browser/views/extensions/extension_view.cc',
             'browser/views/extensions/extension_view.h',
@@ skipping 355 matching lines @@
             'browser/dom_ui/html_dialog_contents.cc',
             'browser/encoding_menu_controller_delegate.cc',
             'browser/external_tab_container.cc',
             'browser/google_update.cc',
             'browser/history/history_indexer.idl',
             'browser/history_tab_ui.cc',
             'browser/history_view.cc',
             'browser/ime_input.cc',
             'browser/importer/ie_importer.cc',
             'browser/jumplist.cc',
-            'browser/memory_details.cc',
             'browser/modal_html_dialog_delegate.cc',
             'browser/sandbox_policy.cc',
             'browser/tab_contents/web_drag_source.cc',
             'browser/tab_contents/web_drop_target.cc',
           ],
         }],
       ],
     },
     {
       'target_name': 'debugger',
@@ skipping 2843 matching lines @@
               # Use outputs of this action as inputs for the main target build.
               # Seems as a misnomer but makes this happy on Linux (scons).
               'process_outputs_as_sources': 1,
             },
           ],  # 'actions'
         },
       ]
     }],
   ],  # 'conditions'
 }