Zoom Extension API (work in progress)

chrome/browser/chrome_page_zoom.cc

Index: chrome/browser/chrome_page_zoom.cc
diff --git a/chrome/browser/chrome_page_zoom.cc b/chrome/browser/chrome_page_zoom.cc
index 5c6c7c34f8ee16d800c9d7cc8425bb943d446b2e..1dfb24a41797b5ebf5deca75b493f1f4404e6cf9 100644
--- a/chrome/browser/chrome_page_zoom.cc
+++ b/chrome/browser/chrome_page_zoom.cc
@@ -10,6 +10,7 @@
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/chrome_page_zoom_constants.h"
 #include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/ui/zoom/zoom_controller.h"
 #include "chrome/common/pref_names.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/user_metrics.h"
@@ -70,8 +71,11 @@ void Zoom(content::WebContents* web_contents, content::PageZoom zoom) {
       Profile::FromBrowserContext(web_contents->GetBrowserContext())->
           GetPrefs()->GetDouble(prefs::kDefaultZoomLevel);
 
+  ZoomController* zoom_controller =
+      ZoomController::FromWebContents(web_contents);
+
   if (zoom == content::PAGE_ZOOM_RESET) {
-    web_contents->SetZoomLevel(default_zoom_level);
+    zoom_controller->SetZoomLevel(default_zoom_level);
     content::RecordAction(UserMetricsAction("ZoomNormal"));
     return;
   }
@@ -89,7 +93,7 @@ void Zoom(content::WebContents* web_contents, content::PageZoom zoom) {
       if (content::ZoomValuesEqual(zoom_level, current_zoom_level))
         continue;
       if (zoom_level < current_zoom_level) {
-        web_contents->SetZoomLevel(zoom_level);
+        zoom_controller->SetZoomLevel(zoom_level);
         content::RecordAction(UserMetricsAction("ZoomMinus"));
         return;
       }
@@ -104,7 +108,7 @@ void Zoom(content::WebContents* web_contents, content::PageZoom zoom) {
       if (content::ZoomValuesEqual(zoom_level, current_zoom_level))
         continue;
       if (zoom_level > current_zoom_level) {
-        web_contents->SetZoomLevel(zoom_level);
+        zoom_controller->SetZoomLevel(zoom_level);
         content::RecordAction(UserMetricsAction("ZoomPlus"));
         return;
       }