Here's what I got when uploading my "pragma once" patch:

hummer:src thakis$ EDITOR=emacs git cl upload
/Volumes/MacintoshHD2/src/chrome-git/src/chrome/browser/autocomplete/keyword_provider.h:50:  Labels should always be indented at least one space.  If this is a member-initializer list in a constructor, the colon should be on the line after the definition header.  [whitespace/labels] [4]
/Volumes/MacintoshHD2/src/chrome-git/src/chrome/browser/automation/automation_extension_tracker.h:17:  Single-argument constructors should be marked explicit.  [runtime/explicit] [5]
/Volumes/MacintoshHD2/src/chrome-git/src/chrome/browser/automation/automation_provider_observers.h:640:  Labels should always be indented at least one space.  If this is a member-initializer list in a constructor, the colon should be on the line after the definition header.  [whitespace/labels] [4]
/Volumes/MacintoshHD2/src/chrome-git/src/chrome/browser/bookmarks/recently_used_folders_combo_model.h:5:  #ifndef header guard has wrong style, please use: CHROME_BROWSER_BOOKMARKS_RECENTLY_USED_FOLDERS_COMBO_MODEL_H_  [build/header_guard] [5]
/Volumes/MacintoshHD2/src/chrome-git/src/chrome/browser/bookmarks/recently_used_folders_combo_model.h:41:  #endif line should be "#endif  // CHROME_BROWSER_BOOKMARKS_RECENTLY_USED_FOLDERS_COMBO_MODEL_H_"  [build/header_guard] [5]
/Volumes/MacintoshHD2/src/chrome-git/src/chrome/browser/browser_process_sub_thread.h:41:  #endif line should be "#endif  // CHROME_BROWSER_BROWSER_PROCESS_SUB_THREAD_H_"  [build/header_guard] [5]
/Volumes/MacintoshHD2/src/chrome-git/src/chrome/browser/extensions/extension_bookmark_helpers.h:35:  #endif line should be "#endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_BOOKMARK_HELPERS_H_"  [build/header_guard] [5]
/Volumes/MacintoshHD2/src/chrome-git/src/chrome/browser/geolocation/gps_location_provider_linux.h:32:  Single-argument constructors should be marked explicit.  [runtime/explicit] [5]
/Volumes/MacintoshHD2/src/chrome-git/src/chrome/browser/gtk/gtk_chrome_button.h:21:  Extra space before ( in function call  [whitespace/parens] [4]
/Volumes/MacintoshHD2/src/chrome-git/src/chrome/browser/gtk/gtk_chrome_button.h:23:  Extra space before ( in function call  [whitespace/parens] [4]
/Volumes/MacintoshHD2/src/chrome-git/src/chrome/browser/gtk/gtk_chrome_button.h:25:  Extra space before ( in function call  [whitespace/parens] [4]
/Volumes/MacintoshHD2/src/chrome-git/src/chrome/browser/gtk/gtk_chrome_link_button.h:27:  Extra space before ( in function call  [whitespace/parens] [4]
/Volumes/MacintoshHD2/src/chrome-git/src/chrome/browser/gtk/gtk_chrome_link_button.h:29:  Extra space before ( in function call  [whitespace/parens] [4]
/Volumes/MacintoshHD2/src/chrome-git/src/chrome/browser/gtk/gtk_chrome_link_button.h:31:  Extra space before ( in function call  [whitespace/parens] [4]
/Volumes/MacintoshHD2/src/chrome-git/src/chrome/browser/importer/mork_reader.h:0:  No copyright message found.  You should have a line: "Copyright [year] <Copyright Owner>"  [legal/copyright] [5]
/Volumes/MacintoshHD2/src/chrome-git/src/chrome/browser/net/chrome_network_delegate.h:31:  #endif line should be "#endif  // CHROME_BROWSER_NET_CHROME_NETWORK_DELEGATE_H_"  [build/header_guard] [5]
/Volumes/MacintoshHD2/src/chrome-git/src/chrome/browser/renderer_host/audio_sync_reader.h:5:  #ifndef header guard has wrong style, please use: CHROME_BROWSER_RENDERER_HOST_AUDIO_SYNC_READER_H_  [build/header_guard] [5]
/Volumes/MacintoshHD2/src/chrome-git/src/chrome/browser/renderer_host/audio_sync_reader.h:56:  #endif line should be "#endif  // CHROME_BROWSER_RENDERER_HOST_AUDIO_SYNC_READER_H_"  [build/header_guard] [5]
/Volumes/MacintoshHD2/src/chrome-git/src/chrome/browser/resources_util.h:5:  #ifndef header guard has wrong style, please use: CHROME_BROWSER_RESOURCES_UTIL_H_  [build/header_guard] [5]
/Volumes/MacintoshHD2/src/chrome-git/src/chrome/browser/resources_util.h:23:  #endif line should be "#endif  // CHROME_BROWSER_RESOURCES_UTIL_H_"  [build/header_guard] [5]
/Volumes/MacintoshHD2/src/chrome-git/src/chrome/browser/scoped_pref_update.h:24:  #endif line should be "#endif  // CHROME_BROWSER_SCOPED_PREF_UPDATE_H_"  [build/header_guard] [5]
/Volumes/MacintoshHD2/src/chrome-git/src/chrome/browser/sync/engine/syncer_types.h:149:  Single-argument constructors should be marked explicit.  [runtime/explicit] [5]
/Volumes/MacintoshHD2/src/chrome-git/src/chrome/browser/sync/test_profile_sync_service.h:38:  Labels should always be indented at least one space.  If this is a member-initializer list in a constructor, the colon should be on the line after the definition header.  [whitespace/labels] [4]
/Volumes/MacintoshHD2/src/chrome-git/src/chrome/browser/views/infobars/after_translate_infobar.h:28:  Labels should always be indented at least one space.  If this is a member-initializer list in a constructor, the colon should be on the line after the definition header.  [whitespace/labels] [4]
/Volumes/MacintoshHD2/src/chrome-git/src/chrome/common/plugin_messages.h:149:  Line contains only semicolon. If this should be an empty statement, use { } instead.  [whitespace/semicolon] [5]
/Volumes/MacintoshHD2/src/chrome-git/src/chrome/common/plugin_messages.h:407:  Line contains only semicolon. If this should be an empty statement, use { } instead.  [whitespace/semicolon] [5]
/Volumes/MacintoshHD2/src/chrome-git/src/chrome/default_plugin/plugin_install_job_monitor.h:19:  Labels should always be indented at least one space.  If this is a member-initializer list in a constructor, the colon should be on the line after the definition header.  [whitespace/labels] [4]
/Volumes/MacintoshHD2/src/chrome-git/src/chrome/test/automation/javascript_message_utils.h:121:  Potential format string bug. Do StringPrintf("%s", format.c_str() instead.  [runtime/printf] [4]
/Volumes/MacintoshHD2/src/chrome-git/src/chrome/test/automation/javascript_message_utils.h:128:  Potential format string bug. Do StringPrintf("%s", format.c_str() instead.  [runtime/printf] [4]
/Volumes/MacintoshHD2/src/chrome-git/src/chrome/test/automation/javascript_message_utils.h:137:  Potential format string bug. Do StringPrintf("%s", format.c_str() instead.  [runtime/printf] [4]
/Volumes/MacintoshHD2/src/chrome-git/src/chrome/test/pyautolib/pyautolib.h:156:  Missing spaces around =  [whitespace/operators] [4]
/Volumes/MacintoshHD2/src/chrome-git/src/chrome/test/pyautolib/pyautolib.h:158:  Missing spaces around =  [whitespace/operators] [4]
/Volumes/MacintoshHD2/src/chrome-git/src/chrome/test/pyautolib/pyautolib.h:159:  Missing spaces around =  [whitespace/operators] [4]

Found a bad license header in these files:
  app/app_paths.h \
  app/app_switches.h \
  chrome/browser/bookmarks/bookmark_service.h \
  chrome/browser/chromeos/panels/panel_scroller.h \
  chrome/browser/chromeos/panels/panel_scroller_container.h \
  chrome/browser/chromeos/panels/panel_scroller_header.h \
  chrome/browser/clipboard_dispatcher.h \
  chrome/browser/importer/mork_reader.h \
  chrome/browser/in_process_webkit/browser_webkitclient_impl.h \
  chrome/browser/in_process_webkit/dom_storage_dispatcher_host.h \
  chrome/browser/in_process_webkit/dom_storage_namespace.h \
  chrome/browser/views/chrome_views_delegate.h \
  chrome/common/dom_storage_common.h \
  chrome/common/extensions/user_script.h \
  chrome/common/webkit_param_traits.h \
  chrome/renderer/renderer_sandbox_support_linux.h \
  chrome/renderer/renderer_webstoragenamespace_impl.h \
  chrome/renderer/webmediaplayer_impl.h \
  chrome/renderer/websharedworkerrepository_impl.h \
  chrome/test/menu_model_test.h \
  net/base/file_stream.h \
  net/base/registry_controlled_domain.h \
  net/ftp/ftp_ctrl_response_buffer.h \
  net/ftp/ftp_directory_listing_buffer.h \
  net/ftp/ftp_directory_listing_parser.h \
  net/ftp/ftp_directory_listing_parser_ls.h \
  net/ftp/ftp_directory_listing_parser_mlsd.h \
  net/ftp/ftp_directory_listing_parser_netware.h \
  net/ftp/ftp_directory_listing_parser_unittest.h \
  net/ftp/ftp_directory_listing_parser_vms.h \
  net/ftp/ftp_directory_listing_parser_windows.h \
  net/ftp/ftp_network_layer.h \
  net/ftp/ftp_network_session.h \
  net/ftp/ftp_request_info.h \
  net/ftp/ftp_response_info.h \
  net/ftp/ftp_transaction.h \
  net/ftp/ftp_transaction_factory.h \
  net/http/http_chunked_decoder.h \
  net/http/md4.h \
  net/proxy/proxy_resolver_script.h \
  net/tools/flip_server/other_defines.h \
  net/tools/flip_server/string_piece_utils.h \
  net/tools/spdyshark/packet-spdy.h \
  views/controls/button/native_button_gtk.h \
  views/controls/button/native_button_wrapper.h \
  views/controls/button/radio_button.h \
  views/controls/combobox/native_combobox_gtk.h \
  views/controls/combobox/native_combobox_win.h \
  views/controls/combobox/native_combobox_wrapper.h \
  views/controls/native/native_view_host_wrapper.h \
  views/controls/native_control_win.h \
  views/controls/scrollbar/native_scroll_bar_wrapper.h \
  views/controls/slider/native_slider_wrapper.h \
  views/controls/table/native_table_gtk.h \
  views/controls/table/native_table_wrapper.h \
  views/views_delegate.h \
  views/window/window.h

** Presubmit Warnings **
Found lines longer than 80 characters (first 5 shown).
  base/ref_counted.h, line 113, 82 chars \
  chrome/browser/bookmarks/bookmark_drag_data.h, line 100, 81 chars \
  chrome/browser/child_process_security_policy.h, line 119, 83 chars \
  chrome/browser/ime_input.h, line 227, 81 chars \
  chrome/common/webkit_param_traits.h, line 16, 81 chars

Found line ending with white spaces in:

***************
chrome/common/font_descriptor_mac.h, line 22
chrome/common/font_descriptor_mac.h, line 28
chrome/installer/util/installer_util_unittests_resource.h, line 10
net/tools/fetch/http_server_response_info.h, line 15
***************

Changelist failed cpplint.py check.


That should probably all be fixed.