Upstream Chrome on iOS source code [9/11].

ios/chrome/browser/ui/toolbar/toolbar_button_tints.mm

+// 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 "ios/chrome/browser/ui/toolbar/toolbar_button_tints.h"
+
+#import "ios/chrome/browser/ui/uikit_ui_util.h"
+
+namespace toolbar {
+
+// The colors used to tint the buttons in the toolbar.
+const int kLightModeNormalColor = 0x5A5A5A;
+const int kIncognitoModeNormalColor = 0xFFFFFF;
+const int kDarkModeNormalColor = 0xFFFFFF;
+const int kPressedColor = 0x4285F4;
+
+UIColor* NormalButtonTint(ToolbarControllerStyle style) {
+  switch (style) {
+    case ToolbarControllerStyleLightMode:
+      return UIColorFromRGB(kLightModeNormalColor);
+    case ToolbarControllerStyleIncognitoMode:
+      return UIColorFromRGB(kIncognitoModeNormalColor);
+    case ToolbarControllerStyleDarkMode:
+      return UIColorFromRGB(kDarkModeNormalColor);
+    case ToolbarControllerStyleMaxStyles:
+      NOTREACHED();
+      return nil;
+  }
+}
+
+UIColor* HighlighButtonTint(ToolbarControllerStyle style) {
+  return UIColorFromRGB(kPressedColor);
+  DCHECK_NE(ToolbarControllerStyleMaxStyles, style);
+}
+
+}  // namespace toolbar