Reland: Update image and text color when row is selected in the chooser on Mac

chrome/browser/chooser_controller/mock_chooser_controller.cc

 // Copyright 2016 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/chooser_controller/mock_chooser_controller.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 136 matching lines @@
       view()->OnOptionUpdated(it - options_.begin());
   }
 }
 
 const int MockChooserController::kNoSignalStrengthLevelImage = -1;
 const int MockChooserController::kSignalStrengthLevel0Bar = 0;
 const int MockChooserController::kSignalStrengthLevel1Bar = 1;
 const int MockChooserController::kSignalStrengthLevel2Bar = 2;
 const int MockChooserController::kSignalStrengthLevel3Bar = 3;
 const int MockChooserController::kSignalStrengthLevel4Bar = 4;
+const int MockChooserController::kImageColorUnselected = 0;
+const int MockChooserController::kImageColorSelected = 1;
 
 void MockChooserController::ClearAllOptions() {
   options_.clear();
 }