Upstream accessibility font size preferences.

chrome/browser/accessibility/font_size_prefs_android.h

+// Copyright (c) 2014 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_ACCESSIBILITY_FONT_SIZE_PREFS_ANDROID_H_
+#define CHROME_BROWSER_ACCESSIBILITY_FONT_SIZE_PREFS_ANDROID_H_
+
+#include <jni.h>
+#include "base/android/scoped_java_ref.h"
+#include "chrome/browser/accessibility/font_size_prefs.h"
+
+class FontSizePrefsAndroid {
+ public:
+  FontSizePrefsAndroid(JNIEnv* env, jobject obj, Profile* profile);
+  ~FontSizePrefsAndroid();
+  void Destroy(JNIEnv* env, jobject obj);
+
+  void SetFontScaleFactor(JNIEnv* env, jobject obj, jfloat font);
+  float GetFontScaleFactor(JNIEnv* env, jobject obj);
+  void SetForceEnableZoom(JNIEnv* env, jobject obj, jboolean enabled);
+  bool GetForceEnableZoom(JNIEnv* env, jobject obj);
+
+  void AddObserver(JNIEnv* env, jobject obj, jlong obs);
+  void RemoveObserver(JNIEnv* env, jobject obj, jlong obs);
+
+  static bool Register(JNIEnv* env);
+
+ private:
+  FontSizePrefs* font_size_prefs_;
+
+  DISALLOW_COPY_AND_ASSIGN(FontSizePrefsAndroid);
+};
+
+class FontSizePrefsObserverAndroid : public FontSizePrefs::Observer {
+ public:
+  FontSizePrefsObserverAndroid(JNIEnv* env, jobject obj);
+  virtual ~FontSizePrefsObserverAndroid();
+  void DestroyObserverAndroid(JNIEnv* env, jobject obj);
+
+  static bool Register(JNIEnv* env);
+
+  // FontSizePrefs::Observer implementation.
+  virtual void OnChangeFontSize(float font) OVERRIDE;
+  // FontSizePrefs::Observer implementation.
+  virtual void OnChangeForceEnableZoom(bool enabled) OVERRIDE;
+
+ private:
+  base::android::ScopedJavaGlobalRef<jobject> java_ref_;
+};
+
+#endif  // CHROME_BROWSER_ACCESSIBILITY_FONT_SIZE_PREFS_ANDROID_H_