Make the favicons look visually the same after refreshing

chrome/browser/favicon/favicon_util.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/favicon/favicon_util.h"
 
 #include "chrome/browser/favicon/favicon_types.h"
 #include "chrome/browser/history/select_favicon_frames.h"
 #include "content/public/browser/render_view_host.h"
 #include "googleurl/src/gurl.h"
 #include "skia/ext/image_operations.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/gfx/codec/png_codec.h"
 #include "ui/gfx/favicon_size.h"
 #include "ui/gfx/image/image_png_rep.h"
 #include "ui/gfx/image/image_skia.h"
 #include "webkit/glue/image_decoder.h"
 
+#if defined(OS_MACOSX)
+#include "base/mac/mac_util.h"
+#endif
+
 namespace {
 
 // Creates image reps of DIP size |favicon_size| for the subset of
 // |scale_factors| for which the image reps can be created without resizing
 // or decoding the bitmap data.
 std::vector<gfx::ImagePNGRep> SelectFaviconFramesFromPNGsWithoutResizing(
     const std::vector<chrome::FaviconBitmapResult>& png_data,
     const std::vector<ui::ScaleFactor>& scale_factors,
     int favicon_size) {
   std::vector<gfx::ImagePNGRep> png_reps;
@@ skipping 69 matching lines @@
   // TODO(ios): 100p should not be necessary on iOS retina devices. However
   // the sync service only supports syncing 100p favicons. Until sync supports
   // other scales 100p is needed in the list of scale factors to retrieve and
   // store the favicons in both 100p for sync and 200p for display. cr/160503.
   favicon_scale_factors.insert(favicon_scale_factors.begin() + insert_index,
                                ui::SCALE_FACTOR_100P);
   return favicon_scale_factors;
 }
 
 // static
+void FaviconUtil::SetFaviconColorSpace(gfx::Image* image) {
+#if defined(OS_MACOSX)
+  image->SetSourceColorSpace(base::mac::GetSystemColorSpace());
+#endif  // OS_MACOSX
+}
+
+// static
 gfx::Image FaviconUtil::SelectFaviconFramesFromPNGs(
       const std::vector<chrome::FaviconBitmapResult>& png_data,
       const std::vector<ui::ScaleFactor>& scale_factors,
       int favicon_size) {
   // Create image reps for as many scale factors as possible without resizing
   // the bitmap data or decoding it. FaviconHandler stores already resized
   // favicons into history so no additional resizing should be needed in the
   // common case.
   // Creating the gfx::Image from |png_data| without resizing or decoding if
   // possible is important because:
@@ skipping 89 matching lines @@
     int new_height = decoded.height();
     gfx::CalculateFaviconTargetSize(&new_width, &new_height);
     decoded = skia::ImageOperations::Resize(
         decoded, skia::ImageOperations::RESIZE_LANCZOS3, new_width, new_height);
   }
 
   // Encode our bitmap as a PNG.
   gfx::PNGCodec::EncodeBGRASkBitmap(decoded, false, png_data);
   return true;
 }