Omit save_password_infobar.cc from the build when unused

chrome/chrome_browser_ui.gypi

 # Copyright 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.
 
 {
   'variables': {
     # There are two sections of sources:
     # * "Platform"-based sources (OS, toolkit, etc.)
     # * Feature/directory-based sources (e.g., history, printing)
 
@@ skipping 2192 matching lines @@
       'browser/ui/views/infobars/alternate_nav_infobar_view.cc',
       'browser/ui/views/infobars/alternate_nav_infobar_view.h',
       'browser/ui/views/infobars/confirm_infobar.cc',
       'browser/ui/views/infobars/confirm_infobar.h',
       'browser/ui/views/infobars/infobar_background.cc',
       'browser/ui/views/infobars/infobar_background.h',
       'browser/ui/views/infobars/infobar_container_view.cc',
       'browser/ui/views/infobars/infobar_container_view.h',
       'browser/ui/views/infobars/infobar_view.cc',
       'browser/ui/views/infobars/infobar_view.h',
-      'browser/ui/views/infobars/save_password_infobar.cc',
       'browser/ui/views/load_complete_listener.cc',
       'browser/ui/views/load_complete_listener.h',
       'browser/ui/views/location_bar/bubble_icon_view.cc',
       'browser/ui/views/location_bar/bubble_icon_view.h',
       'browser/ui/views/location_bar/content_setting_image_view.cc',
       'browser/ui/views/location_bar/content_setting_image_view.h',
       'browser/ui/views/location_bar/ev_bubble_view.cc',
       'browser/ui/views/location_bar/ev_bubble_view.h',
       'browser/ui/views/location_bar/icon_label_bubble_view.cc',
       'browser/ui/views/location_bar/icon_label_bubble_view.h',
@@ skipping 188 matching lines @@
       'browser/ui/views/extensions/media_galleries_dialog_views.cc',
       'browser/ui/views/extensions/media_galleries_dialog_views.h',
       'browser/ui/views/extensions/media_gallery_checkbox_view.cc',
       'browser/ui/views/extensions/media_gallery_checkbox_view.h',
     ],
     # MacViews sources that we still want to keep behind a compile-time flag.
     # TODO(jackhou): Move items to chrome_browser_ui_views_sources when they
     # migrate from mac_views_browser to a chrome://flag.
     'chrome_browser_ui_views_mac_experimental_sources': [
       'browser/ui/views/apps/chrome_app_window_client_views_mac.mm',
+      'browser/ui/views/infobars/save_password_infobar.cc',
     ],
     # Windows-only. Assume ash/aura/views.
     'chrome_browser_ui_win_sources': [
       'browser/ui/network_profile_bubble.cc',
       'browser/ui/network_profile_bubble.h',
       'browser/ui/views/color_chooser_dialog.cc',
       'browser/ui/views/color_chooser_dialog.h',
       'browser/ui/views/frame/browser_desktop_window_tree_host.h',
       'browser/ui/views/frame/browser_desktop_window_tree_host_win.cc',
       'browser/ui/views/frame/browser_desktop_window_tree_host_win.h',
@@ skipping 764 matching lines @@
           ],
           'sources': [
             '<@(chrome_browser_ui_non_mobile_sources)',
             '<@(chrome_browser_ui_omnibox_non_mobile_sources)',
           ],
         }],
       ],
     },
   ],
 }