Font size in DomDistiller prefs syncs with local scaling

components/dom_distiller/core/distilled_page_prefs_android.h

Index: components/dom_distiller/core/distilled_page_prefs_android.h
diff --git a/components/dom_distiller/core/distilled_page_prefs_android.h b/components/dom_distiller/core/distilled_page_prefs_android.h
index de3928eccecf18b4d4a11f1a7dfc4c0e7bedb058..11649e9276072ef5bb61bca68644a0abbee313a1 100644
--- a/components/dom_distiller/core/distilled_page_prefs_android.h
+++ b/components/dom_distiller/core/distilled_page_prefs_android.h
@@ -24,6 +24,8 @@ class DistilledPagePrefsAndroid {
   jint GetFontFamily(JNIEnv* env, jobject obj);
   void SetTheme(JNIEnv* env, jobject obj, jint theme);
   jint GetTheme(JNIEnv* env, jobject obj);
+  void SetFontScaling(JNIEnv* env, jobject obj, jfloat scaling);
+  jfloat GetFontScaling(JNIEnv* env, jobject obj);
 
   void AddObserver(JNIEnv* env, jobject obj, jlong obs);
   void RemoveObserver(JNIEnv* env, jobject obj, jlong obs);
@@ -43,6 +45,7 @@ class DistilledPagePrefsObserverAndroid : public DistilledPagePrefs::Observer {
   void OnChangeFontFamily(
       DistilledPagePrefs::FontFamily new_font_family) override;
   void OnChangeTheme(DistilledPagePrefs::Theme new_theme) override;
+  void OnChangeFontScaling(float scaling) override;
 
   virtual void DestroyObserverAndroid(JNIEnv* env, jobject obj);