Font size in DomDistiller prefs syncs with local scaling

components/dom_distiller/core/dom_distiller_request_view_base.cc

Index: components/dom_distiller/core/dom_distiller_request_view_base.cc
diff --git a/components/dom_distiller/core/dom_distiller_request_view_base.cc b/components/dom_distiller/core/dom_distiller_request_view_base.cc
index 70e7185ab0fe78a85bd2d8fc0919f899cccbb90b..911cfdd91dbc584bfaf8908f7f0ed81ac1a89a2e 100644
--- a/components/dom_distiller/core/dom_distiller_request_view_base.cc
+++ b/components/dom_distiller/core/dom_distiller_request_view_base.cc
@@ -32,7 +32,7 @@ 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());
 
   std::string title(l10n_util::GetStringUTF8(
@@ -114,13 +114,23 @@ void DomDistillerRequestViewBase::OnChangeFontFamily(
   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