Convert remaining instances of the 'os' variable in grit conditions

chrome/app/generated_resources.grd

 <?xml version="1.0" encoding="UTF-8"?>
 
 <!--
 This file contains definitions of resources that will be translated for each
 locale.  The variables is_win, is_macosx, is_linux, and is_posix are available
 for making strings OS specific.  Other platform defines such as use_titlecase
 are declared in build/common.gypi.
 -->
 
 <grit base_dir="." latest_public_release="0" current_release="1"
@@ skipping 336 matching lines @@
         Done
       </message>
       <message name="IDS_SKIP" desc="A generic term for Skip on buttons and menus.">
         Skip
       </message>
       <message name="IDS_ACCNAME_TAB" desc="A generic description of a tab button's role">
         Tab
       </message>
 
       <!-- content area context menus -->
-      <if expr="os == 'darwin'">
+      <if expr="is_macosx">
           <message name="IDS_CONTENT_CONTEXT_WRITING_DIRECTION_MENU" desc="The name of the Writing Direction submenu in the content area context menu.  To translate, launch /Applications/Textedit.app in an appropriately localized version of OS X, right-click on the text entry area and use the translation from there.">
             Writing Direction
           </message>
           <message name="IDS_CONTENT_CONTEXT_WRITING_DIRECTION_DEFAULT" desc="The name of the 'default' item from the Writing Direction submenu in the content area context menu.  To translate, launch /Applications/Textedit.app in an appropriately localized version of OS X, right-click on the text entry area and use the translation from there.">
             Default
           </message>
           <message name="IDS_CONTENT_CONTEXT_WRITING_DIRECTION_LTR" desc="The name of the 'Left to Right' item from the Writing Direction submenu in the content area context menu.  To translate, launch /Applications/Textedit.app in an appropriately localized version of OS X, right-click on the text entry area and use the translation from there.">
             Left to Right
           </message>
           <message name="IDS_CONTENT_CONTEXT_WRITING_DIRECTION_RTL" desc="The name of the 'Right to Left' item from the Writing Direction submenu in the content area context menu.  To translate, launch /Applications/Textedit.app in an appropriately localized version of OS X, right-click on the text entry area and use the translation from there.">
@@ skipping 668 matching lines @@
       <message name="IDS_XPFRAME_RESTORE_TOOLTIP" desc="The tooltip used for the restore button">
         Restore
       </message>
       <message name="IDS_XPFRAME_MAXIMIZE_TOOLTIP" desc="The tooltip used for the maximize button">
         Maximize
       </message>
       <message name="IDS_XPFRAME_CLOSE_TOOLTIP" desc="The tooltip used for the close button">
         Close
       </message>
 
-      <if expr="os == 'darwin'">
+      <if expr="is_macosx">
         <message name="IDS_PREFERENCES" desc="The Mac menu item to open the preferences window in the app menu.">
           Preferences...
         </message>
       </if>
       <if expr="is_posix and not is_macosx">
         <message name="IDS_PREFERENCES" desc="The text label of the Preferences menu item.">
           Preferences
         </message>
       </if>
 
@@ skipping 1095 matching lines @@
       </message>
       </if>
 
       <message name="IDS_PAST_TIME_TODAY" desc="Relative day today">
         Today
       </message>
       <message name="IDS_PAST_TIME_YESTERDAY" desc="Relative day yesterday">
         Yesterday
       </message>
       <!-- Download Shelf-->
-      <if expr="os == 'darwin'">
+      <if expr="is_macosx">
         <message name="IDS_SHOW_ALL"
                  desc="In Title Case: Button text on a button that opens the downloads page">
           Show All
         </message>
       </if>
       <message name="IDS_SHOW_ALL_DOWNLOADS"
                desc="Link label shown at the corner of the download shelf">
         Show all downloads...
       </message>
       <message name="IDS_DOWNLOAD_STATUS_INTERRUPTED"
@@ skipping 81 matching lines @@
         Remove from list
       </message>
       <message name="IDS_DOWNLOAD_LINK_CANCEL"
                desc="In the download view, 'Cancel' link text">
         Cancel
       </message>
       <message name="IDS_DOWNLOAD_LINK_RETRY"
                desc="In the download view, 'Retry download' link text">
         Retry download
       </message>
-      <if expr="os != 'darwin'">
+      <if expr="not is_macosx">
         <message name="IDS_DOWNLOAD_LINK_SHOW"
                  desc="In the download view, 'Show in folder' link text">
           Show in folder
         </message>
       </if>
-      <if expr="os == 'darwin'">
+      <if expr="is_macosx">
         <message name="IDS_DOWNLOAD_LINK_SHOW"
                  desc="Mac: In the download view, 'Show in Finder' link text">
           Show in Finder
         </message>
       </if>
       <message name="IDS_DOWNLOAD_TAB_CANCELED"
                desc="Text that appears next to the downloaded files that have been canceled">
         Canceled
       </message>
       <message name="IDS_DOWNLOAD_FILE_REMOVED"
@@ skipping 74 matching lines @@
           &amp;Pause
         </message>
         <message name="IDS_DOWNLOAD_MENU_RESUME_ITEM"
                  desc="In Title Case: Download context menu resume download">
           &amp;Resume
         </message>
       </if>
       <!-- GRIT doesn't support nesting <if>...</if> blocks, so these can't -->
       <!-- go within the above titlecase checks, instead markup must use    -->
       <!-- combined tests for all cases.                                    -->
-      <!-- NOTE: the last two (darwin cases) are the same English values,   -->
+      <!-- NOTE: the last two (OSX cases) are the same English values,      -->
       <!--       but two strings are needed in case some other language     -->
       <!--       needs a difference for Title Case support.                 -->
-      <if expr="os != 'darwin' and not pp_ifdef('use_titlecase')">
+      <if expr="not is_macosx and not pp_ifdef('use_titlecase')">
         <!-- !Mac & Sentence case -->
         <message name="IDS_DOWNLOAD_MENU_SHOW"
                  desc="Show the file in file explorer, 'Show in folder' item"
               meaning="'show in folder' on non Mac in Sentence case">
           &amp;Show in folder
         </message>
       </if>
-      <if expr="os != 'darwin' and pp_ifdef('use_titlecase')">
+      <if expr="not is_macosx and pp_ifdef('use_titlecase')">
         <!-- !Mac & Title Case -->
         <message name="IDS_DOWNLOAD_MENU_SHOW"
                  desc="In Title Case: Show the file in file explorer, 'Show in folder' item"
               meaning="'show in folder' on non Mac in Title Case">
           &amp;Show in Folder
         </message>
       </if>
-      <if expr="os == 'darwin' and not pp_ifdef('use_titlecase')">
+      <if expr="is_macosx and not pp_ifdef('use_titlecase')">
         <!-- Mac & Sentence case -->
         <message name="IDS_DOWNLOAD_MENU_SHOW"
                  desc="Mac: Show the file in the Finder, 'Show in Finder' item"
               meaning="'show in Finder' on Mac in Sentence case">
           &amp;Show in Finder
         </message>
       </if>
-      <if expr="os == 'darwin' and pp_ifdef('use_titlecase')">
+      <if expr="is_macosx and pp_ifdef('use_titlecase')">
         <!-- Mac & Title Case -->
         <message name="IDS_DOWNLOAD_MENU_SHOW"
                  desc="In Title Case: Mac: Show the file in the Finder, 'Show in Finder' item"
               meaning="'show in Finder' on Mac in Title Case">
           &amp;Show in Finder
         </message>
       </if>
 
       <!-- Remove in-progress downloads confirmation dialog -->
       <message name="IDS_SINGLE_DOWNLOAD_REMOVE_CONFIRM_WARNING" desc="Title of the dialog asking for user confirmation to close the browser when one download is in-progress.">
@@ skipping 1392 matching lines @@
       </message>
       <message name="IDS_EXTENSION_LOAD_BACKGROUND_PAGE_FAILED" desc="">
         Could not load background page '<ph name="BACKGROUND_PAGE">$1<ex>page.html</ex></ph>'.
       </message>
       <message name="IDS_EXTENSION_LOAD_OPTIONS_PAGE_FAILED" desc="">
         Could not load options page '<ph name="OPTIONS_PAGE">$1<ex>page.html</ex></ph>'.
       </message>
       <message name="IDS_EXTENSION_LOAD_SIDEBAR_PAGE_FAILED" desc="">
         Could not load sidebar page '<ph name="SIDEBAR_PAGE">$1<ex>page.html</ex></ph>'.
       </message>
-      <if expr="os == 'win32'">
+      <if expr="is_win">
         <message name="IDS_EXTENSION_UNPACK_FAILED" desc="On windows, it is possible to mount a disk without the root of that disk having a drive letter.  The sandbox does not support this. See crbug/49530 .">
           Can not unpack extension.  To safely unpack an extension, there must be a path to your profile directory that starts with a drive letter and does not contain a junction, mount point, or symlink.  No such path exists for your profile.
         </message>
       </if>
-      <if expr="os != 'win32'">
+      <if expr="not is_win">
         <message name="IDS_EXTENSION_UNPACK_FAILED" desc="">
           Can not unpack extension.  To safely unpack an extension, there must be a path to your profile directory that does not contain a symlink.  No such path exists for your profile.
         </message>
       </if>
       <message name="IDS_EXTENSION_PACKAGE_ERROR_MESSAGE" desc="The cases where we get an error message string back from some other component. The message might be in English, but these are typically developer errors, and the extension SDK is English.">
         Package is invalid. Details: '<ph name="ERROR_MESSAGE">$1<ex>error</ex></ph>'.
       </message>
       <message name="IDS_EXTENSION_PACKAGE_ERROR_CODE" desc="Error message in cases where we fail to install the extension because the crx file is invalid. For example, because the crx header or signature is invalid.">
         Package is invalid: '<ph name="ERROR_CODE">$1<ex>error</ex></ph>'.
       </message>
@@ skipping 1182 matching lines @@
       </message>
       <message name="IDS_IMPORT_NO_PROFILE_FOUND" desc="Message displayed when we do not find any supported browser to import from.">
         No supported browser found
       </message>
 
       <!-- Import progress popup -->
       <message name="IDS_IMPORT_PROGRESS_TITLE" desc="Title for the importing progress dialog">
         Importing
       </message>
 
-      <if expr="os == 'darwin'">
+      <if expr="is_macosx">
         <message name="IDS_IMPORT_SETTINGS_MENU_MAC" desc="The text label for the Import menu item.">
           Import Bookmarks and Settings...
         </message>
         <message name="IDS_IMPORT_PROGRESS_EXPLANATORY_TEXT_MAC" desc="Text displayed above status items in Import Dialog">
           <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph> is now importing the following items from <ph name="IMPORT_BROWSER_NAME">$2<ex>Safari</ex></ph>:
         </message>
         <message name="IDS_IMPORT_IMPORTING_PROGRESS_TEXT_MAC" desc="Status text displayed when an item in the Import Progress Dialog is being imported.">
           Importing...
         </message>
         <message name="IDS_IMPORT_IMPORTING_DONE_TEXT_MAC" desc="Status text displayed when an item in the Import Progress Dialog is done importing.">
@@ skipping 351 matching lines @@
         Block sites from setting any data
       </message>
       <message name="IDS_COOKIES_EXCEPTIONS_BUTTON" desc="A button in the Content Settings dialog for opening cookie storing exception rules dialog.">
         Exceptions...
       </message>
       <message name="IDS_COOKIES_BLOCK_3RDPARTY_CHKBOX" desc="A checkbox in the Content Settings dialog for blocking all 3rd party cookies.">
         Block third-party cookies from being set
       </message>
 
       <!-- Mac users do not close their browser; they quit it. -->
-      <if expr="os != 'darwin'">
+      <if expr="not is_macosx">
         <message name="IDS_COOKIES_CLEAR_WHEN_CLOSE_CHKBOX" desc="A checkbox in the Content Settings dialog for removing all cookies on when browser is closed.">
           Clear cookies and other site data when I close my browser
         </message>
         <message name="IDS_COOKIES_LSO_CLEAR_WHEN_CLOSE_CHKBOX" desc="A checkbox in the Content Settings dialog for removing all cookies on when browser is closed.">
           Clear cookies and other site and plug-in data when I close my browser
         </message>
       </if>
-      <if expr="os == 'darwin'">
+      <if expr="is_macosx">
         <message name="IDS_COOKIES_CLEAR_WHEN_CLOSE_CHKBOX" desc="A checkbox in the Content Settings dialog for removing all cookies on when browser is quit (Mac).">
           Clear cookies and other site data when I quit my browser
         </message>
         <message name="IDS_COOKIES_LSO_CLEAR_WHEN_CLOSE_CHKBOX" desc="A checkbox in the Content Settings dialog for removing all cookies on when browser is quit (Mac).">
           Clear cookies and other site and plug-in data when I quit my browser
         </message>
       </if>
 
       <message name="IDS_IMAGES_TAB_LABEL" desc="Label for Images tab on Content Settings dialog">
         Images
@@ skipping 199 matching lines @@
 
       <!-- Cookie/Images/JavaScript/Plugins/Pop-ups/Location exception editor dialogs -->
       <message name="IDS_EXCEPTION_EDITOR_PATTERN_TITLE" desc="Title of the pattern field in the exception editor">
         Hostname Pattern:
       </message>
       <message name="IDS_EXCEPTION_EDITOR_OTR_TITLE" desc="Title of the incognito checkbox in the exception editor">
         Only apply to this incognito session
       </message>
 
       <!-- Automatic updates -->
-      <if expr="os == 'darwin'">
+      <if expr="is_macosx">
         <message name="IDS_PROMOTE_INFOBAR_TEXT" desc="The text to show in the automatic update setup info bar.  Mac-only.">
           <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph> may not be able to keep itself updated.
         </message>
         <message name="IDS_PROMOTE_INFOBAR_PROMOTE_BUTTON" desc="The 'Set up automatic updates' button in the automatic update setup info bar.  Mac-only.">
           Set up automatic updates
         </message>
         <message name="IDS_PROMOTE_INFOBAR_DONT_ASK_BUTTON" desc="The 'Don't ask again' button in the automatic update setup info bar.  Mac-only.">
           Don't ask again
         </message>
         <message name="IDS_PROMOTE_AUTHENTICATION_PROMPT" desc="The prompt displayed in the authentication dialog when setting up automatic updates for all users.  The system will add a sentence asking for an administrator's name and password.  Mac-only.">
           <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph> will set up automatic updates for all users of this computer.
         </message>
       </if>
 
       <!-- About Chrome View -->
-      <if expr="os == 'darwin'">
+      <if expr="is_macosx">
         <message name="IDS_ABOUT_CHROME_PROMOTE_UPDATER" desc="The 'Set Up Automatic Updates for All Users' button in the About window.  Mac-only.">
           Set Up Automatic Updates for All Users
         </message>
       </if>
       <message name="IDS_ABOUT_CHROME_UPDATE_CHECK" desc="The Check for Updates button">
         Update Now
       </message>
       <message name="IDS_UPGRADE_CHECK_STARTED" desc="Status label: About to start checking for updates">
         Checking for updates...
       </message>
@@ skipping 636 matching lines @@
         already a permitted program, try deleting it from the list of permitted programs
         and adding it again.
       </message>
       <message name="IDS_ERRORPAGES_SUGGESTION_PROXY_CONFIG" desc="When a webpage fails to load, in some cases we suggest checking the proxy server configuration, or disabling the proxy server.">
         If you use a proxy server, check your proxy settings or contact your
         network administrator to make sure the proxy server is working. If you
         don't believe you should be using a proxy server, adjust your proxy
         settings:
         <ph name="PLATFORM_TEXT">$1<ex>Goto the wrench menu and choose Fix It</ex></ph>
       </message>
-      <if expr="os == 'darwin'">
+      <if expr="is_macosx">
         <message name="IDS_ERRORPAGES_SUGGESTION_PROXY_DISABLE_PLATFORM" desc="Mac OSX instructions for disabling use of a proxy server.">
           Go to
           <ph name="BEGIN_BOLD">&lt;strong&gt;</ph>
           Applications &gt; System Preferences &gt; Network &gt; Advanced &gt; Proxies
           <ph name="END_BOLD">&lt;/strong&gt;</ph>
           and deselect any proxies that have been selected.
         </message>
       </if>
       <if expr="is_posix and not is_macosx">
         <message name="IDS_ERRORPAGES_SUGGESTION_PROXY_DISABLE_PLATFORM" desc="Linux and ChromeOS instructions for disabling use of a proxy server.">
           Go to
           <ph name="BEGIN_BOLD">&lt;strong&gt;</ph>
           the wrench menu &gt;
           <ph name="SETTINGS_TITLE">&lt;span jscontent="settingsTitle"&gt;&lt;/span&gt;<ex>Settings</ex></ph>
           &gt;
           <ph name="ADVANCED_TITLE">&lt;span jscontent="advancedTitle"&gt;&lt;/span&gt;<ex>Under the Hood</ex></ph>
           &gt;
           <ph name="PROXIES_TITLE">&lt;span jscontent="proxyTitle"&gt;&lt;/span&gt;<ex>Change proxy settings...</ex></ph>
           <ph name="END_BOLD">&lt;/strong&gt;</ph>
           and make sure your configuration is set to &quot;no proxy&quot; or &quot;direct.&quot;
         </message>
       </if>
-      <if expr="os == 'win32'">
+      <if expr="is_win">
         <message name="IDS_ERRORPAGES_SUGGESTION_PROXY_DISABLE_PLATFORM" desc="Windows instructions for disabling use of a proxy server.">
           Go to
           <ph name="BEGIN_BOLD">&lt;strong&gt;</ph>
           the wrench menu &gt;
           <ph name="SETTINGS_TITLE">&lt;span jscontent="settingsTitle"&gt;&lt;/span&gt;<ex>Settings</ex></ph>
           &gt;
           <ph name="ADVANCED_TITLE">&lt;span jscontent="advancedTitle"&gt;&lt;/span&gt;<ex>Under the Hood</ex></ph>
           &gt;
           <ph name="PROXIES_TITLE">&lt;span jscontent="proxyTitle"&gt;&lt;/span&gt;<ex>Change proxy settings...</ex></ph>
           &gt;
@@ skipping 119 matching lines @@
           $1<ex>Google Chrome can't display the webpage because your computer isn't connected to the Internet.</ex>
         </ph>
         <ph name="LINE_BREAK">&lt;br /&gt;&lt;br /&gt;</ph>
         You can try to diagnose the problem by taking the following steps:
         <ph name="LINE_BREAK">&lt;br /&gt;&lt;br /&gt;</ph>
         <ph name="PLATFORM_TEXT">
           $2<ex>Goto the wrench menu and choose Fix It.</ex>
         </ph>
       </message>
 
-      <if expr="os == 'darwin'">
+      <if expr="is_macosx">
         <message name="IDS_ERRORPAGES_SUMMARY_INTERNET_DISCONNECTED_PLATFORM" desc="Summary (platform dependent section) in the error page when the network connection failed.  Describes how to get to the network Diagnostics screen under Mac OSX.">
           Go to
           <ph name="BEGIN_BOLD">&lt;strong&gt;</ph>
           Applications &gt; System Preferences &gt; Network &gt; Assist me
           <ph name="END_BOLD">&lt;/strong&gt;</ph>
           to test your connection.
         </message>
       </if>
       <if expr="is_win">
         <message name="IDS_ERRORPAGES_SUMMARY_INTERNET_DISCONNECTED_PLATFORM" desc="Summary (platform dependent section) in the error page when the network connection failed.  Describes how to get to the network Diagnostics screen under Windows 7 and later.">
@@ skipping 574 matching lines @@
       <message name="IDS_HTTP_POST_WARNING_RESEND" desc="Resend button for post warning">
         Continue
       </message>
 
       <!-- Menus -->
       <message name="IDS_MENU_EMPTY_SUBMENU" desc="Used when a submenu has no entries">
         (empty)
       </message>
 
       <!-- Mac First-run dialog messages -->
-      <if expr="os == 'darwin'">
+      <if expr="is_macosx">
         <message name="IDS_FIRSTRUN_DLG_MAC_WINDOW_TITLE" desc="Window title of First Run Title on OS X - displayed in Window title bar">
           Welcome to <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph>
         </message>
         <message name="IDS_FIRSTRUN_DLG_MAC_COMPLETE_INSTALLATION_LABEL" desc="Label at top of Dialog noting what's going to happen">
           <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph> is ready to complete your installation
         </message>
         <message name="IDS_FIRSTRUN_DLG_MAC_SET_DEFAULT_BROWSER_LABEL" desc="Label for checkbox that sets the default browser">
           Set <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph> as my default browser
         </message>
         <message name="IDS_FIRSTRUN_DLG_MAC_OPTIONS_SEND_USAGE_STATS_LABEL" desc="Label for checkbox to ask whether to send usage stats to Google">
@@ skipping 72 matching lines @@
       <if expr="pp_ifdef('chromeos')">
         <message name="IDS_SETTINGS_TITLE" desc="Title for the settings tab.">
           Settings
         </message>
       </if>
       <if expr="not pp_ifdef('chromeos') and is_posix">
         <message name="IDS_SETTINGS_TITLE" desc="Title for the settings tab.">
           Preferences
         </message>
       </if>
-      <if expr="os == 'win32'">
+      <if expr="is_win">
         <message name="IDS_SETTINGS_TITLE" desc="Title for the settings tab.">
           Options
         </message>
       </if>
 
       <!-- Options Window -->
       <message name="IDS_OPTIONS_DIALOG_TITLE" desc="The title of the Options dialog box">
         <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph> Options
       </message>
       <if expr="pp_ifdef('chromeos')">
@@ skipping 323 matching lines @@
           Autofill Preferences
         </message>
         <message name="IDS_AUTOFILL_OPTIONS" desc="The value of the Autofill options button.">
           Autofill Preferences...
         </message>
         <message name="IDS_AUTOFILL_OPTIONS_POPUP" desc="The value of the Autofill options menu entry.">
           <ph name="PRODUCT_NAME_SHORT">$1<ex>Chrome</ex></ph> Autofill Preferences
         </message>
       </if>
 
-      <if expr="os == 'win32'">
+      <if expr="is_win">
         <message name="IDS_AUTOFILL_OPTIONS_TITLE" desc="The title of the Autofill dialog.">
           Autofill Options
         </message>
         <message name="IDS_AUTOFILL_OPTIONS" desc="The value of the Autofill options button.">
           Autofill options...
         </message>
         <message name="IDS_AUTOFILL_OPTIONS_POPUP" desc="The value of the Autofill options menu entry.">
           <ph name="PRODUCT_NAME_SHORT">$1<ex>Chrome</ex></ph> Autofill options
         </message>
       </if>
@@ skipping 298 matching lines @@
       <if expr="pp_ifdef('chromeos')">
         <message name="IDS_OPTIONS_MANAGED_PREFS" desc="ChromeOS banner displayed in case there are managed options the user won't be able to change.">
           Some settings have been disabled by your IT administrator.
         </message>
       </if>
       <if expr="not pp_ifdef('chromeos') and is_posix">
         <message name="IDS_OPTIONS_MANAGED_PREFS" desc="Mac/Linux banner displayed in case there are managed options the user won't be able to change.">
           Some preferences have been disabled by your IT administrator.
         </message>
       </if>
-      <if expr="os == 'win32'">
+      <if expr="is_win">
         <message name="IDS_OPTIONS_MANAGED_PREFS" desc="Windows banner displayed in case there are managed options the user won't be able to change.">
           Some options have been disabled by your IT administrator.
         </message>
       </if>
 
       <!-- Options search page strings. -->
       <message name="IDS_OPTIONS_SEARCH_PAGE_TITLE" desc="Title of the settings search page.">
         Search Results
       </message>
       <message name="IDS_OPTIONS_SEARCH_PAGE_NO_MATCHES" desc="Text description of a search that has no results.">
         No matches were found.
       </message>
       <message name="IDS_OPTIONS_SEARCH_PAGE_HELP_LABEL" desc="Help text for a serach that has no results.">
         Can't find what you're looking for?
       </message>
       <message name="IDS_OPTIONS_SEARCH_PAGE_HELP_TITLE" desc="Help link for a search that has no results.">
         <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph> Help
       </message>
       <if expr="pp_ifdef('chromeos')">
         <message name="IDS_OPTIONS_SEARCH_PLACEHOLDER" desc="Text placeholder for an empty search field on ChromeOS.">
           Search settings
         </message>
       </if>
       <if expr="not pp_ifdef('chromeos') and is_posix">
         <message name="IDS_OPTIONS_SEARCH_PLACEHOLDER" desc="Text placeholder for an empty search field on Mac/Linux.">
           Search preferences
         </message>
       </if>
-      <if expr="os == 'win32'">
+      <if expr="is_win">
         <message name="IDS_OPTIONS_SEARCH_PLACEHOLDER" desc="Text placeholder for an empty search field on Windows.">
           Search options
         </message>
       </if>
 
       <!-- Misc advanced option description strings. -->
       <message name="IDS_NETWORK_PREDICTION_ENABLED_DESCRIPTION" desc="In the advanced options tab, the text next to the checkbox that enables prediction of network actions.  Actions include DNS prefetching, TCP and SSL preconnection, and prerendering of webpages.">
         Predict network actions to improve page load performance
       </message>
 
@@ skipping 82 matching lines @@
         Accessible to Script:
       </message>
       <message name="IDS_COOKIES_COOKIE_CREATED_LABEL" desc="The Cookie Created label">
         Created:
       </message>
       <message name="IDS_COOKIES_COOKIE_EXPIRES_LABEL" desc="The Cookie Expires label">
         Expires:
       </message>
 
       <!-- Mac users do not close their browser; they quit it. -->
-      <if expr="os != 'darwin'">
+      <if expr="not is_macosx">
         <message name="IDS_COOKIES_COOKIE_EXPIRES_SESSION" desc="The Cookie Expires field value for a session cookie">
           When I close my browser
         </message>
       </if>
-      <if expr="os == 'darwin'">
+      <if expr="is_macosx">
         <message name="IDS_COOKIES_COOKIE_EXPIRES_SESSION" desc="The Cookie Expires field value for a session cookie (Mac)">
           When I quit my browser
         </message>
       </if>
 
       <message name="IDS_COOKIES_COOKIE_SENDFOR_ANY" desc="Send Cookie for any kind of connection">
         Any kind of connection
       </message>
       <message name="IDS_COOKIES_COOKIE_SENDFOR_SECURE" desc="Send Cookie for any kind of connection">
         Secure connections only
@@ skipping 1589 matching lines @@
         Lower right
       </message>
       <message name="IDS_NOTIFICATION_POSITION_UPPER_LEFT" desc="Menu label for positioning in upper left corner">
         Upper left
       </message>
       <message name="IDS_NOTIFICATION_POSITION_UPPER_RIGHT" desc="Menu label for positioning in upper right corner">
         Upper right
       </message>
 
       <!-- Mac AppleScript -->
-      <if expr="os == 'darwin'">
+      <if expr="is_macosx">
         <message name="IDS_GET_PROFILE_ERROR_APPLESCRIPT_MAC" desc="Error dialog title to be displayed when profile fails to load.  Mac-only.">
         Could not get profile.
         </message>
         <message name="IDS_BOOKMARK_MODEL_LOAD_ERROR_APPLESCRIPT_MAC" desc="Error dialog title to be displayed when bookmark model fails to load.  Mac-only.">
         Could not load bookmark model.
         </message>
         <message name="IDS_CREATE_BOOKMARK_FOLDER_ERROR_APPLESCRIPT_MAC" desc="Error dialog title to be displayed when bookmark folder cannot be created.  Mac-only.">
         Could not create bookmark folder.
         </message>
         <message name="IDS_CREATE_BOOKMARK_ITEM_ERROR_APPLESCRIPT_MAC" desc="Error dialog title to be displayed when bookmark item cannot be created.  Mac-only.">
@@ skipping 13 matching lines @@
         </message>
         <message name="IDS_INVALID_TAB_INDEX_APPLESCRIPT_MAC" desc="Error dialog title to be displayed when invalid tab index is entered.  Mac-only.">
                 Invalid tab index entered.
         </message>
         <message name="IDS_SET_MODE_APPLESCRIPT_MAC" desc="Error dialog title to be displayed when mode is entered after window is created.  Mac-only.">
                 Cannot set mode after window is set.
         </message>
         <message name="IDS_WRONG_INDEX_ERROR_APPLESCRIPT_MAC" desc="Error dialog title to be displayed when ordered index is out of bounds.  Mac-only.">
                 Wrong index.
         </message>
-      </if> <!-- os == 'darwin' -->
+      </if> <!-- is_macosx -->
 
 
       <!-- Mac Menubar Menus -->
-      <if expr="os == 'darwin'">
+      <if expr="is_macosx">
         <!-- Menubar Menu Titles -->
         <!-- NOTE: Some of these exist in context menus with Title Case support, but we use different IDs in case we need slightly different strings in some language due to the different context. -->
         <message name="IDS_FILE_MENU_MAC" desc="The menu title of the Mac file menu.">
           File
         </message>
         <message name="IDS_EDIT_MENU_MAC" desc="The menu title of the Mac edit menu.">
           Edit
         </message>
         <message name="IDS_VIEW_MENU_MAC" desc="The menu title of the Mac view menu.">
           View
@@ skipping 228 matching lines @@
         <message name="IDS_ALL_WINDOWS_FRONT_MAC" desc="The Mac menu item for bring all to front the window menu.">
           Bring All to Front
         </message>
         <!-- Help menu -->
         <message name="IDS_FEEDBACK_MAC" desc="The Mac menu item to report a bug in the Help menu.">
           Report an Issue...
         </message>
         <message name="IDS_HELP_MAC" desc="The Mac menu item to show help in the Help menu.">
           <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph> Help
         </message>
-      </if> <!-- os == 'darwin' -->
+      </if> <!-- is_macosx -->
 
       <!-- Linux Global Menubar Menus -->
       <if expr="is_posix and not is_macosx">
         <!-- Unity and some other GNOME configurations now have a permanent,
              Mac-like menu bar that lives outside the window at the top of the
              screen. The following strings should be in Linux style, not Mac
              style (i.e. have ampersand accelerators, be title cased, etc.)
 
              In general, the Linux UI will try to reuse other menu strings
              since they are otherwise appropriate, but we do need a few
@@ skipping 165 matching lines @@
         Not now
       </message>
     </if>
     <if expr="pp_ifdef('use_titlecase')">
       <message name="IDS_NOT_NOW" desc="In Tile Case: The button label for delaying the relaunch and updating Chrome.">
         Not Now
       </message>
     </if>
 
     <!-- Extra Mac UI Strings -->
-    <if expr="os == 'darwin'">
+    <if expr="is_macosx">
       <message name="IDS_PLEASE_RELAUNCH_BROWSER" desc="Title of the alert when Chrome needs to be relaunched for a change/update to take effect.">
         Please Relaunch <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph>
       </message>
       <message name="IDS_SAVE_PAGE_FILE_FORMAT_PROMPT_MAC" desc="The title of the File Format label for saving a page.">
         Format:
       </message>
 
       <!-- Install from disk image -->
       <message name="IDS_INSTALL_FROM_DMG_TITLE" desc="Title of the dialog asking whether to install from the disk image.  Mac-only.">
         Do you want to install <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph>?
@@ skipping 2628 matching lines @@
         Seccomp sandbox
       </message>
       <message name="IDS_ABOUT_SANDBOX_OK" desc="A message telling the user that their sandbox is sufficient.">
         You are adequately sandboxed.
       </message>
       <message name="IDS_ABOUT_SANDBOX_BAD" desc="A message telling the user that their sandbox is insufficient.">
         You are not adequately sandboxed!
       </message>
     </if>
 
-    <if expr="os == 'darwin'">
+    <if expr="is_macosx">
       <message name="IDS_SELECT_FOLDER_BUTTON_TITLE" desc="The name of the Select button in the folder selection dialog.">
         Select
       </message>
     </if>
 
     <!-- GoogleURL tracker info bar -->
     <message name="IDS_GOOGLE_URL_TRACKER_INFOBAR_MESSAGE" desc="Message displayed when the user's current Google TLD doesn't match the default for their location.">
        It looks like you've moved.  Would you like to use <ph name="NEW_GOOGLE_URL">$1<ex>google.com</ex></ph>?
     </message>
 
@@ skipping 221 matching lines @@
     </includes>
     <structures fallback_to_english="true">
       <structure name="IDD_CHROME_FRAME_FIND_DIALOG" file="cf_resources.rc" type="dialog" >
       </structure>
       <structure name="IDD_CHROME_FRAME_READY_PROMPT" file="cf_resources.rc" type="dialog" >
       </structure>
     </structures>
 
   </release>
 </grit>