linux and chromeos: Turn on -Wunused-const-variable.

chrome/browser/chromeos/login/wallpaper_manager.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/chromeos/login/wallpaper_manager.h"
 
 #include <vector>
 
 #include "ash/shell.h"
 #include "base/command_line.h"
@@ skipping 39 matching lines @@
 // The amount of delay before starts to move custom wallpapers to the new place.
 const int kMoveCustomWallpaperDelaySeconds = 30;
 
 // Default quality for encoding wallpaper.
 const int kDefaultEncodingQuality = 90;
 
 // A dictionary pref that maps usernames to file paths to their wallpapers.
 // Deprecated. Will remove this const char after done migration.
 const char kUserWallpapers[] = "UserWallpapers";
 
-const int kThumbnailWidth = 128;
-const int kThumbnailHeight = 80;
-
 const int kCacheWallpaperDelayMs = 500;
 
 // A dictionary pref that maps usernames to wallpaper properties.
 const char kUserWallpapersProperties[] = "UserWallpapersProperties";
 
 // Names of nodes with info about wallpaper in |kUserWallpapersProperties|
 // dictionary.
 const char kNewWallpaperDateNodeName[] = "date";
 const char kNewWallpaperLayoutNodeName[] = "layout";
 const char kNewWallpaperFileNodeName[] = "file";
@@ skipping 982 matching lines @@
   // |sequence_token_| here.
   wallpaper_loader_->Start(wallpaper_path.value(), 0, sequence_token_,
                            base::Bind(&WallpaperManager::OnWallpaperDecoded,
                                       base::Unretained(this),
                                       email,
                                       info.layout,
                                       update_wallpaper));
 }
 
 }  // namespace chromeos