Implement High Contrast mode for Chrome OS

chrome/browser/chromeos/accessibility/accessibility_util.h

 // 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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_ACCESSIBILITY_ACCESSIBILITY_UTIL_H_
 #define CHROME_BROWSER_CHROMEOS_ACCESSIBILITY_ACCESSIBILITY_UTIL_H_
 #pragma once
 
 #include <string>
 
@@ skipping 22 matching lines @@
 // Toggles whether Chrome OS spoken feedback is on or off. See docs for
 // EnableSpokenFeedback, above.
 void ToggleSpokenFeedback(content::WebUI* login_web_ui);
 
 // Speaks the specified string.
 void Speak(const std::string& utterance);
 
 // Returns true if spoken feedback is enabled, or false if not.
 bool IsSpokenFeedbackEnabled();
 
+// Returns true if High Contrast is enabled, or false if not.
+bool IsHighContrastEnabled();
+
 // Speak the given text if the accessibility pref is already set.
 void MaybeSpeak(const std::string& utterance);
 
 }  // namespace accessibility
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_ACCESSIBILITY_ACCESSIBILITY_UTIL_H_