Remove confirmation dialog from BackgroundModeManager.

chrome/app/chromium_strings.grd

Index: chrome/app/chromium_strings.grd
diff --git a/chrome/app/chromium_strings.grd b/chrome/app/chromium_strings.grd
index d01a73be30bfba61088ce9b572a3c51eb073d46e..23da4fb2baed17137d019431d3d863e2c62da30d 100644
--- a/chrome/app/chromium_strings.grd
+++ b/chrome/app/chromium_strings.grd
@@ -357,9 +357,6 @@ be available for now. -->
       <message name="IDS_OPTIONS_BACKGROUND_ENABLE_BACKGROUND_MODE" desc="The label of the check-box that enables background mode">
         Continue running background apps when Chromium is closed
       </message>
-      <message name="IDS_CONFIRM_EXIT_BACKGROUND_MODE_BODY" desc="Confirmation displayed when disabling background mode via the status tray context menu when there are no windows open">
-        Are you sure you want to quit Chromium? (This setting can be toggled in <ph name="ADVANCED_OPTIONS_TAB_TITLE">$1<ex>Options - Under the Hood</ex></ph>)
-      </message>
       <message name="IDS_CANT_WRITE_USER_DIRECTORY_SUMMARY" desc="Summary of problem displayed in dialog when we can't create a directory for this user.">
         Chromium cannot read and write to its data directory:\n\n<ph name="USER_DATA_DIRECTORY">$1<ex>C:\Documents and Settings\devint\Local Settings\Application Data\Google\Chrome</ex></ph>
       </message>