Remove ImageSkia::empty and ImageSkia::extractSubset

chrome/browser/chromeos/status/network_menu_icon.cc

 // Copyright (c) 2012 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/status/network_menu_icon.h"
 
 #include <algorithm>
 #include <cmath>
 #include <map>
 #include <utility>
@@ skipping 403 matching lines @@
   if (!network) {
     // If not a visible network, check for a remembered network.
     network = cros->FindRememberedNetworkByPath(service_path_);
     if (!network) {
       LOG(WARNING) << "Unable to find network:" << service_path_;
       return;
     }
   }
 
   // Determine whether or not we need to update the icon.
-  bool dirty = image_.empty();
+  bool dirty = image_.isNull();
 
   // If the network state has changed, the icon needs updating.
   if (state_ != network->state()) {
     state_ = network->state();
     dirty = true;
   }
 
   type_ = network->type();
 
   if (type_ == TYPE_WIFI || type_ == TYPE_WIMAX || type_ == TYPE_CELLULAR) {
@@ skipping 119 matching lines @@
     bottom_left_badge_ = rb.GetImageSkiaNamed(IDR_STATUSBAR_VPN_BADGE);
 }
 
 void NetworkIcon::UpdateIcon(const Network* network) {
   ClearIconAndBadges();
   SetIcon(network);
   SetBadges(network);
 }
 
 void NetworkIcon::GenerateImage() {
-  if (icon_.empty())
+  if (icon_.isNull())
     return;
 
   image_ = NetworkMenuIcon::GenerateImageFromComponents(icon_, top_left_badge_,
       top_right_badge_, bottom_left_badge_, bottom_right_badge_);
 }
 
 bool NetworkIcon::ShouldShowInTray() const {
   if (type_ == TYPE_UNKNOWN || type_ == TYPE_VPN)
     return false;
   if (type_ != TYPE_ETHERNET)
@@ skipping 348 matching lines @@
 const gfx::ImageSkia NetworkMenuIcon::GetConnectedImage(ImageType type,
       ResourceColorTheme color) {
   return GetImage(type, NumImages(type) - 1, color);
 }
 
 int NetworkMenuIcon::NumImages(ImageType type) {
   return (type == ARCS) ? kNumArcsImages : kNumBarsImages;
 }
 
 }  // chromeos