Remove background mode preferences UI.

BUG=64267
TEST=Existing tests suffice.

Review URL: http://codereview.chromium.org/5361003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@67205 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 3 insertions, 13 deletions

diff --git a/chrome/browser/background_mode_manager.h b/chrome/browser/background_mode_manager.h
index 666b4f7..dbae6e5 100644
--- a/chrome/browser/background_mode_manager.h
+++ b/chrome/browser/background_mode_manager.h
@@ -27,10 +27,9 @@ class StatusTray;
 // are no open browser windows.
 //
 // Chrome enters background mode whenever there is an application with the
-// "background" permission installed and the appropriate user preference is
-// set (kBackgroundModeEnabled). This class monitors the set of installed/loaded
-// extensions to ensure that Chrome enters/exits background mode at the
-// appropriate time.
+// "background" permission installed. This class monitors the set of
+// installed/loaded extensions to ensure that Chrome enters/exits background
+// mode at the appropriate time.
 //
 // When Chrome is in background mode, it will continue running even after the
 // last browser window is closed, until the user explicitly exits the app.
@@ -94,12 +93,6 @@ class BackgroundModeManager
   // launch-on-startup is disabled if appropriate.
   void OnBackgroundAppUninstalled();
 
-  // Invoked when the kBackgroundModeEnabled preference has changed.
-  void OnBackgroundModePrefChanged();
-
-  // Returns true if the background mode preference is enabled
-  bool IsBackgroundModeEnabled();
-
   // Returns true if chrome has set "launch on startup" property for itself
   // earlier and is allowed to reset it later, reducing likelihood of
   // overriding user choices.
@@ -183,9 +176,6 @@ class BackgroundModeManager
   // Reference to our status icon (if any) - owned by the StatusTray.
   StatusIcon* status_icon_;
 
-  // Ensure observed preferences are properly cleaned up.
-  PrefChangeRegistrar pref_registrar_;
-
   DISALLOW_COPY_AND_ASSIGN(BackgroundModeManager);
 };