Remove ImageSkia::empty and ImageSkia::extractSubset

ui/app_list/search_result_view.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 "ui/app_list/search_result_view.h"
 
 #include "ui/app_list/search_result.h"
 #include "ui/app_list/search_result_list_view.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/font.h"
@@ skipping 193 matching lines @@
   }
 }
 
 void SearchResultView::OnIconChanged() {
   gfx::ImageSkia image(result_ ? result_->icon() : gfx::ImageSkia());
   // Note this might leave the view with an old icon. But it is needed to avoid
   // flash when a SearchResult's icon is loaded asynchronously. In this case, it
   // looks nicer to keep the stale icon for a little while on screen instead of
   // clearing it out. It should work correctly as long as the SearchResult does
   // not forget to SetIcon when it's ready.
-  if (image.empty())
+  if (image.isNull())
     return;
 
   // Scales down big icons but leave small ones unchanged.
   if (image.width() > kIconDimension || image.height() > kIconDimension)
     icon_->SetImageSize(gfx::Size(kIconDimension, kIconDimension));
   else
     icon_->ResetImageSize();
 
   icon_->SetImage(image);
 }
 
 }  // namespace app_list