Remove ImageSkia::empty and ImageSkia::extractSubset

ui/gfx/image/image_skia.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/gfx/image/image_skia.h"
 
 #include <algorithm>
 #include <cmath>
 #include <limits>
 
@@ skipping 219 matching lines @@
   std::vector<ui::ScaleFactor> supported_scale_factors =
       ui::GetSupportedScaleFactors();
   for (size_t i = 0; i < supported_scale_factors.size(); ++i)
     storage_->FindRepresentation(supported_scale_factors[i], true);
 
   return image_reps();
 }
 
 #endif  // OS_MACOSX
 
-bool ImageSkia::empty() const {
-  return isNull() || storage_->size().IsEmpty();
-}
-
 int ImageSkia::width() const {
   return isNull() ? 0 : storage_->size().width();
 }
 
 gfx::Size ImageSkia::size() const {
   return gfx::Size(width(), height());
 }
 
 int ImageSkia::height() const {
   return isNull() ? 0 : storage_->size().height();
 }
 
-bool ImageSkia::extractSubset(ImageSkia* dst, const SkIRect& subset) const {
-  gfx::Rect rect(subset.x(), subset.y(), subset.width(), subset.height());
-  *dst = ImageSkiaOperations::ExtractSubset(*this, rect);
-  return (!dst->isNull());
-}
-
 std::vector<ImageSkiaRep> ImageSkia::image_reps() const {
   if (isNull())
     return std::vector<ImageSkiaRep>();
 
   ImageSkiaReps internal_image_reps = storage_->image_reps();
   // Create list of image reps to return, skipping null image reps which were
   // added for caching purposes only.
   ImageSkiaReps image_reps;
   for (ImageSkiaReps::iterator it = internal_image_reps.begin();
        it != internal_image_reps.end(); ++it) {
@@ skipping 23 matching lines @@
   }
 
   ImageSkiaReps::iterator it =
       storage_->FindRepresentation(ui::SCALE_FACTOR_100P, true);
   if (it != storage_->image_reps().end())
     return it->mutable_sk_bitmap();
   return NullImageRep().mutable_sk_bitmap();
 }
 
 }  // namespace gfx