Font size in DomDistiller prefs syncs with local scaling

components/dom_distiller/core/dom_distiller_request_view_base.h

Index: components/dom_distiller/core/dom_distiller_request_view_base.h
diff --git a/components/dom_distiller/core/dom_distiller_request_view_base.h b/components/dom_distiller/core/dom_distiller_request_view_base.h
index af63af4aa558a4a8bf6806b50e34ec471cdde65d..c35b9255ffe045cb6829a1e525f0057fd17ce038 100644
--- a/components/dom_distiller/core/dom_distiller_request_view_base.h
+++ b/components/dom_distiller/core/dom_distiller_request_view_base.h
@@ -40,14 +40,18 @@ class DomDistillerRequestViewBase : public ViewRequestDelegate,
 
  protected:
   // DistilledPagePrefs::Observer implementation:
+  void OnChangeTheme(DistilledPagePrefs::Theme new_theme) override;
   void OnChangeFontFamily(
       DistilledPagePrefs::FontFamily new_font_family) override;
-  void OnChangeTheme(DistilledPagePrefs::Theme new_theme) override;
+  void OnChangeFontScaling(float scaling) override;
 
   // Sends JavaScript to the attached Viewer, buffering data if the viewer isn't
   // ready.
   virtual void SendJavaScript(const std::string& buffer) = 0;
 
+  // Sends JavaScript common to normal and error pages.
+  void SendCommonJavaScript();
+
   // The handle to the view request towards the DomDistillerService. It
   // needs to be kept around to ensure the distillation request finishes.
   scoped_ptr<ViewerHandle> viewer_handle_;