Moves SelectFaviconFrames from history to favicon_base component.

chrome/browser/history/select_favicon_frames.h

-// 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.
-
-#ifndef CHROME_BROWSER_HISTORY_SELECT_FAVICON_FRAMES_H_
-#define CHROME_BROWSER_HISTORY_SELECT_FAVICON_FRAMES_H_
-
-#include <vector>
-
-#include "ui/base/layout.h"
-
-class SkBitmap;
-
-namespace gfx {
-class ImageSkia;
-class Size;
-}
-
-// Score which is smaller than the minimum score returned by
-// SelectFaviconFrames() or SelectFaviconBitmapIDs().
-extern const float kSelectFaviconFramesInvalidScore;
-
-// Takes a list of all bitmaps found in a .ico file, and creates an
-// ImageSkia that's |desired_size| x |desired_size| DIP big. This
-// function adds a representation at every desired scale factor.
-// If |desired_size| is 0, the largest bitmap is returned unmodified.
-// |original_sizes| are the original sizes of the bitmaps. (For instance,
-// WebContents::DownloadImage() does resampling if it is passed a max size.)
-// If score is non-NULL, it receives a score between 0 (bad) and 1 (good)
-// that describes how well |bitmaps| were able to produce an image at
-// |desired_size| for |scale_factors|.
-// The score is arbitrary, but it's best for exact size matches,
-// and gets worse the more resampling needs to happen.
-// If the resampling algorithm is modified, the resampling done in
-// FaviconUtil::SelectFaviconFramesFromPNGs() should probably be modified too as
-// it inspired by this method.
-gfx::ImageSkia SelectFaviconFrames(
-    const std::vector<SkBitmap>& bitmaps,
-    const std::vector<gfx::Size>& original_sizes,
-    const std::vector<ui::ScaleFactor>& scale_factors,
-    int desired_size,
-    float* score);
-
-// Takes a list of the pixel sizes of a favicon's favicon bitmaps and returns
-// the indices of the best sizes to use to create an ImageSkia that's
-// |desired_size| x |desired_size| DIP big. If |desired_size| is 0, the index
-// of the largest size is returned. If score is non-NULL, it receives a score
-// between 0 (bad) and 1 (good) that describes how well the bitmap data with
-// the sizes at |best_indices| will produce an image of |desired_size| DIP for
-// |scale_factors|. The score is arbitrary, but it's best for exact size
-// matches, and gets worse the more resampling needs to happen.
-// TODO(pkotwicz): Remove need to pass in |scale_factors|.
-// TODO(pkotwicz): Remove callers of this method for which |frame_pixel_sizes|
-// are the sizes of the favicon bitmaps after they were resized.
-void SelectFaviconFrameIndices(
-    const std::vector<gfx::Size>& frame_pixel_sizes,
-    const std::vector<ui::ScaleFactor>& scale_factors,
-    int desired_size,
-    std::vector<size_t>* best_indices,
-    float* score);
-
-#endif  // CHROME_BROWSER_HISTORY_SELECT_FAVICON_FRAMES_H_