Remove ImageSkia::empty and ImageSkia::extractSubset

chrome/browser/chromeos/login/user_image.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/login/user_image.h"
 
 #include "ui/gfx/codec/png_codec.h"
 
 namespace chromeos {
 
 namespace {
 
 bool IsAnimatedImage(const UserImage::RawImage& data) {
   const char kGIFStamp[] = "GIF";
   const size_t kGIFStampLength = sizeof(kGIFStamp) - 1;
 
   if (data.size() >= kGIFStampLength &&
       memcmp(&data[0], kGIFStamp, kGIFStampLength) == 0) {
     return true;
   }
   return false;
 }
 
 bool EncodeBGRAImageSkia(const gfx::ImageSkia& image,
                          bool discard_transparency,
                          std::vector<unsigned char>* output) {
-  if (image.empty() || !image.bitmap())
+  if (image.isNull() || !image.bitmap())
     return false;
   return gfx::PNGCodec::EncodeBGRASkBitmap(*image.bitmap(),
       discard_transparency, output);
 }
 
 }  // namespace
 
 // static
 UserImage UserImage::CreateAndEncode(const gfx::ImageSkia& image) {
   RawImage raw_image;
@@ skipping 28 matching lines @@
   }
 }
 
 UserImage::~UserImage() {}
 
 void UserImage::DiscardRawImage() {
   RawImage().swap(raw_image_);  // Clear |raw_image_|.
 }
 
 }  // namespace chromeos