Cleanup: Remove unused resources in ui_strings.grd or mark them as platform-specific.

ui/base/strings/ui_strings.grd

 <?xml version="1.0" encoding="UTF-8"?>
 
 <!-- This file contains definitions of resources that will be translated for
 each locale. Specifically, these are UI strings that are used by app/ that
 need to be translated for each locale.-->
 
 <grit base_dir="." latest_public_release="0" current_release="1"
       source_lang_id="en" enc_check="möl">
   <outputs>
     <!-- TODO add each of your output files.  Modify the three below, and add
@@ skipping 1766 matching lines @@
       <message name="IDS_PAST_TIME_YESTERDAY" desc="Relative day yesterday">
         Yesterday
       </message>
 
       <!-- Menus -->
       <message name="IDS_APP_MENU_EMPTY_SUBMENU" desc="Used when a submenu has no entries">
         (empty)
       </message>
 
       <!-- General application strings -->
-      <message name="IDS_APP_UNTITLED_SHORTCUT_FILE_NAME" desc="The name of the Internet Shortcut file created for URLs dragged that have no title">
-        Untitled Webpage
-      </message>
-      <message name="IDS_APP_SAVEAS_ALL_FILES" desc="Save As dialog box default text">
-        All Files
-      </message>
-      <message name="IDS_APP_SAVEAS_EXTENSION_FORMAT" desc="Save As dialog box extension format text">
-        <ph name="SAVEAS_EXTENSION_TYPE">$1<ex>EXE</ex></ph> File (.<ph name="SAVEAS_EXTENSION_NAME">$2<ex>exe</ex></ph>)
-      </message>
+      <if expr="is_win or is_ios">
+        <message name="IDS_APP_UNTITLED_SHORTCUT_FILE_NAME" desc="The name of the Internet Shortcut file created for URLs dragged that have no title">
+          Untitled Webpage
+        </message>
+      </if>
+      <if expr="is_win">
+        <message name="IDS_APP_SAVEAS_ALL_FILES" desc="Save As dialog box default text">
+          All Files
+        </message>
+        <message name="IDS_APP_SAVEAS_EXTENSION_FORMAT" desc="Save As dialog box extension format text">
+          <ph name="SAVEAS_EXTENSION_TYPE">$1<ex>EXE</ex></ph> File (.<ph name="SAVEAS_EXTENSION_NAME">$2<ex>exe</ex></ph>)
+        </message>
+      </if>
       <message name="IDS_SELECT_UPLOAD_FOLDER_DIALOG_TITLE" desc="The default title for the Select Upload Folder dialog.">
         Select Folder to Upload
       </message>
 
       <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>
         <message name="IDS_SELECT_UPLOAD_FOLDER_BUTTON_TITLE" desc="The name of the Select button in the folder selection dialog for uploading.">
           Upload
@@ skipping 283 matching lines @@
         <ph name="QUANTITY">$1<ex>42.0</ex></ph> GB/s
       </message>
       <message name="IDS_APP_TEBIBYTES_PER_SECOND" desc="Units tag indicating a speed of terabytes/second">
         <ph name="QUANTITY">$1<ex>42.0</ex></ph> TB/s
       </message>
       <message name="IDS_APP_PEBIBYTES_PER_SECOND" desc="Units tag indicating a speed of petabytes/second">
         <ph name="QUANTITY">$1<ex>42.0</ex></ph> PB/s
       </message>
 
       <!-- Message center -->
-      <message name="IDS_MESSAGE_CENTER_ACCESSIBLE_NAME" desc="The accessible name for the Notification Center window.">
-        Notification Center
-      </message>
+      <if expr="use_ash">
+        <message name="IDS_MESSAGE_CENTER_ACCESSIBLE_NAME" desc="The accessible name for the Notification Center window.">
+          Notification Center
+        </message>
+      </if>
       <message name="IDS_MESSAGE_CENTER_NOTIFIER_DISABLE" desc="The menu entry for disabling a notifier from a notification.">
         Disable notifications from <ph name="notifier_name">$1<ex>Notification Galore!</ex></ph>
       </message>
       <message name="IDS_MESSAGE_CENTER_FOOTER_TITLE" desc="The label in the footer of the message center">
-        Notifications
+        Notifications
       </message>
       <message name="IDS_MESSAGE_CENTER_SETTINGS_BUTTON_LABEL" desc="The button label for visiting the appropriate settings page in the footer of the message center.">
         Settings
       </message>
-      <message name="IDS_MESSAGE_CENTER_SETTINGS_GO_BACK_BUTTON_TOOLTIP" desc="The tooltip on back button that returns from settings to the notification list.">
-        Go back to notifications
-      </message>
+      <if expr="is_macosx">
+        <message name="IDS_MESSAGE_CENTER_SETTINGS_GO_BACK_BUTTON_TOOLTIP" desc="The tooltip on back button that returns from settings to the notification list.">
+          Go back to notifications
+        </message>
+      </if>
       <message name="IDS_MESSAGE_CENTER_SETTINGS_DIALOG_DESCRIPTION" desc="The label to describe the settings dialog.">
         Allow notifications from the following:
       </message>
       <message name="IDS_MESSAGE_CENTER_SETTINGS_DESCRIPTION_MULTIUSER" desc="The label to describe the settings dialog if there is more than one user.">
         Allow notifications from the following for each user:
       </message>
       <message name="IDS_MESSAGE_CENTER_SETTINGS" desc="The menu entry or button for visiting the appropriate settings page.">
         Settings...
       </message>
       <message name="IDS_MESSAGE_CENTER_CLEAR_ALL" desc="The button for clearing all notifications.">
@@ skipping 15 matching lines @@
       <message name="IDS_MESSAGE_CENTER_QUIET_MODE" desc="The button label for do not disturb mode.">
         Do not disturb
       </message>
       <message name="IDS_MESSAGE_CENTER_QUIET_MODE_1HOUR" desc="The button label to enter do not disturb mode in one hour.">
         Do not disturb for one hour
       </message>
       <message name="IDS_MESSAGE_CENTER_QUIET_MODE_1DAY" desc="The button label to enter do not disturb mode in one day.">
         Do not disturb for one day
       </message>
       <message name="IDS_MESSAGE_CENTER_CLOSE_NOTIFICATION_BUTTON_ACCESSIBLE_NAME" desc="The spoken feedback text for the close button in a notification. Usually 'button' is suffixed to this text automatically.">
-        Notification close
+        Notification close
       </message>
-      <message name="IDS_MESSAGE_CENTER_EXPAND_NOTIFICATION_BUTTON_ACCESSIBLE_NAME" desc="The spoken feedback text for the expand button in a notification. Usually 'button' is suffixed to this text automatically.">
-        Notification expand
-      </message>
-      <message name="IDS_MESSAGE_CENTER_NOTIFIER_SCREENSHOT_NAME" desc="The name of screenshot notifier that is a system componet">
-        Screenshot
-      </message>
-      <message name="IDS_MESSAGE_CENTER_NOTIFICATION_BUTTON_COPY_SCREENSHOT_TO_CLIPBOARD" desc="The button label for the screenshot notification which copies the screenshot image to clipboard on click.">
-        Copy to clipboard
-      </message>
-      <message name="IDS_MESSAGE_CENTER_MORE_FROM" desc="Indicates how many more notifications came from the given source.">
-        <ph name="number_of_notifications">$1<ex>20</ex></ph> more from <ph name="source_of_notifications">$2<ex>GMail</ex></ph>
-      </message>
+      <if expr="use_ash or chromeos">

[Jun Mukai, 2014/04/25 22:02:04]

screenshot is actually chromeos only.

A message is referred in chrome/browser/ui/ash/screenshot_taker.cc, but actually
the 'CreateNotification' method is called only from a clause of #if
defined(OS_CHROMEOS)

This is not your fault but could you edit screenshot_taker.cc so that the
message is referred only in ChromeOS?  Then you can use expr="chromeos"

+        <message name="IDS_MESSAGE_CENTER_NOTIFIER_SCREENSHOT_NAME" desc="The name of screenshot notifier that is a system componet">
+          Screenshot
+        </message>
+      </if>
+      <if expr="use_ash">
+        <message name="IDS_MESSAGE_CENTER_NOTIFICATION_BUTTON_COPY_SCREENSHOT_TO_CLIPBOARD" desc="The button label for the screenshot notification which copies the screenshot image to clipboard on click.">
+          Copy to clipboard
+        </message>
+      </if>
 
       <!-- App list -->
       <message name="IDS_APP_LIST_HELP" desc="The menu entry to show the app list help UI.">
         Help
       </message>
       <message name="IDS_APP_LIST_OPEN_SETTINGS" desc="The menu entry to show the settings UI.">
         Settings
       </message>
       <message name="IDS_APP_LIST_OPEN_FEEDBACK" desc="The menu entry to show the feedback UI.">
         Send feedback
       </message>
       <message name="IDS_APP_LIST_FOLDER_NAME_PLACEHOLDER" desc="The placeholder text for app list folder name.">
         Unnamed Folder
       </message>
       <message name="IDS_APP_LIST_FOLDER_BUTTON_ACCESSIBILE_NAME" desc="The spoken feedback text for navigating to a folder button in top level app list">
         Folder <ph name="folder_name">$1<ex>OEM Apps</ex></ph>
       </message>
       <message name="IDS_APP_LIST_FOLDER_OPEN_FOLDER_ACCESSIBILE_NAME" desc="The spoken feedback text for opening an app launcher folder">
         Open folder
       </message>
       <message name="IDS_APP_LIST_FOLDER_CLOSE_FOLDER_ACCESSIBILE_NAME" desc="The spoken feedback text for closing an app launcher folder">
         Close folder
-      </message>      
+      </message>
       <message name="IDS_APP_LIST_SPEECH_HINT_TEXT" desc="The text label in the speech recognition UI to ask the user to speak the search query">
         Speak now
       </message>
     </messages>
   </release>
 </grit>