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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef COMPONENTS_FAVICON_BASE_FAVICON_UTIL_H_
      6 #define COMPONENTS_FAVICON_BASE_FAVICON_UTIL_H_
      7 
      8 #include <vector>
      9 
     10 #include "components/favicon_base/favicon_types.h"
     11 
     12 namespace gfx {
     13 class Image;
     14 }
     15 
     16 namespace favicon_base {
     17 
     18 // Returns the scales at which favicons should be fetched. This is
     19 // different from ui::GetSupportedScaleFactors() because clients which do
     20 // not support 1x should still fetch a favicon for 1x to push to sync. This
     21 // guarantees that the clients receiving sync updates pushed by this client
     22 // receive a favicon (potentially of the wrong scale factor) and do not show
     23 // the default favicon.
     24 std::vector<float> GetFaviconScales();
     25 
     26 // Sets the color space used for converting |image| to an NSImage to the
     27 // system colorspace. This makes the favicon look the same in the browser UI
     28 // as it does in the renderer.
     29 void SetFaviconColorSpace(gfx::Image* image);
     30 
     31 // Takes a vector of PNG-encoded frames, and converts it to a gfx::Image of
     32 // size |favicon_size| in DIPS. The result gfx::Image has a gfx::ImageSkia with
     33 // gfx::ImageSkiaReps for each |favicon_scales|.
     34 gfx::Image SelectFaviconFramesFromPNGs(
     35     const std::vector<favicon_base::FaviconRawBitmapResult>& png_data,
     36     const std::vector<float>& favicon_scales,
     37     int favicon_size);
     38 
     39 }  // namspace favicon_base
     40 
     41 #endif  // COMPONENTS_FAVICON_BASE_FAVICON_UTIL_H_
     42