Make the favicons look visually the same after refreshing

base/mac/mac_util.mm

 // 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 "base/mac/mac_util.h"
 
 #import <Cocoa/Cocoa.h>
 #import <IOKit/IOKitLib.h>
 
 #include <errno.h>
@@ skipping 126 matching lines @@
   NSString *path_string = [(NSURL *)url.get() path];
   return [path_string fileSystemRepresentation];
 }
 
 bool FSRefFromPath(const std::string& path, FSRef* ref) {
   OSStatus status = FSPathMakeRef((const UInt8*)path.c_str(),
                                   ref, nil);
   return status == noErr;
 }
 
+CGColorSpaceRef GetGenericRGBColorSpace() {
+  // Leaked. That's OK, it's scoped to the lifetime of the application.
+  static CGColorSpaceRef g_color_space_generic_rgb(
+      CGColorSpaceCreateWithName(kCGColorSpaceGenericRGB));
+  DLOG_IF(ERROR, !g_color_space_generic_rgb) <<
+      "Couldn't get the generic RGB color space";
+  return g_color_space_generic_rgb;
+}
+
 CGColorSpaceRef GetSRGBColorSpace() {
   // Leaked.  That's OK, it's scoped to the lifetime of the application.
   static CGColorSpaceRef g_color_space_sRGB =
       CGColorSpaceCreateWithName(kCGColorSpaceSRGB);
   DLOG_IF(ERROR, !g_color_space_sRGB) << "Couldn't get the sRGB color space";
   return g_color_space_sRGB;
 }
 
 CGColorSpaceRef GetSystemColorSpace() {
   // Leaked.  That's OK, it's scoped to the lifetime of the application.
@@ skipping 528 matching lines @@
           StringPiece(begin + comma_loc + 1, ident.end()), &minor_tmp))
     return false;
   *type = ident.substr(0, number_loc);
   *major = major_tmp;
   *minor = minor_tmp;
   return true;
 }
 
 }  // namespace mac
 }  // namespace base