Font size in DomDistiller prefs syncs with local scaling

components/dom_distiller/core/dom_distiller_request_view_base.cc

 // Copyright 2015 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 "components/dom_distiller/core/dom_distiller_request_view_base.h"
 
 #include <sstream>
 #include <string>
 #include <vector>
 
@@ skipping 14 matching lines @@
       distilled_page_prefs_(distilled_page_prefs),
       is_error_page_(false) {
 }
 
 DomDistillerRequestViewBase::~DomDistillerRequestViewBase() {
 }
 
 void DomDistillerRequestViewBase::FlagAsErrorPage() {
   // Viewer handle is not passed to this in the case of error pages
   // so send all JavaScript now.
-  SendJavaScript(viewer::GetJavaScript());
+  SendCommonJavaScript();
   SendJavaScript(viewer::GetErrorPageJs());
 
   is_error_page_ = true;
 }
 
 bool DomDistillerRequestViewBase::IsErrorPage() {
   return is_error_page_;
 }
 
 void DomDistillerRequestViewBase::OnArticleReady(
@@ skipping 55 matching lines @@
 void DomDistillerRequestViewBase::OnChangeTheme(
     DistilledPagePrefs::Theme new_theme) {
   SendJavaScript(viewer::GetDistilledPageThemeJs(new_theme));
 }
 
 void DomDistillerRequestViewBase::OnChangeFontFamily(
     DistilledPagePrefs::FontFamily new_font) {
   SendJavaScript(viewer::GetDistilledPageFontFamilyJs(new_font));
 }
 
+void DomDistillerRequestViewBase::OnChangeFontScaling(float scaling) {
+  SendJavaScript(viewer::GetDistilledPageFontScalingJs(scaling));
+}
+
 void DomDistillerRequestViewBase::TakeViewerHandle(
     scoped_ptr<ViewerHandle> viewer_handle) {
   viewer_handle_ = viewer_handle.Pass();
   // Getting the viewer handle means this is not an error page, send
   // the viewer JavaScript and show the loading indicator.
-  SendJavaScript(viewer::GetJavaScript());
+  SendCommonJavaScript();
   SendJavaScript(viewer::GetToggleLoadingIndicatorJs(false));
 }
 
+void DomDistillerRequestViewBase::SendCommonJavaScript() {
+  SendJavaScript(viewer::GetJavaScript());
+  SendJavaScript(viewer::GetDistilledPageFontScalingJs(
+      distilled_page_prefs_->GetFontScaling()));
+}
+
 }  // namespace dom_distiller