Zoom Extension API

chrome/browser/ui/tabs/tab_strip_model.cc

Index: chrome/browser/ui/tabs/tab_strip_model.cc
diff --git a/chrome/browser/ui/tabs/tab_strip_model.cc b/chrome/browser/ui/tabs/tab_strip_model.cc
index dfad932240f11a5d7e939b29bdf33403f933d6e0..68350fcad3af828cf98d49074e28df3d80f2963f 100644
--- a/chrome/browser/ui/tabs/tab_strip_model.cc
+++ b/chrome/browser/ui/tabs/tab_strip_model.cc
@@ -160,6 +160,11 @@ class TabStripModel::WebContentsData : public content::WebContentsObserver {
   void set_discarded(bool value) { discarded_ = value; }
 
  private:
+  // Notify observers when a WebContents zooms.
+  virtual void DidSetZoomLevel(double old_zoom_level,
+                               double new_zoom_level,
+                               content::ZoomMode zoom_mode) OVERRIDE;
+
   // Make sure that if someone deletes this WebContents out from under us, it
   // is properly removed from the tab strip.
   virtual void WebContentsDestroyed(WebContents* web_contents) OVERRIDE;
@@ -225,6 +230,15 @@ void TabStripModel::WebContentsData::SetWebContents(WebContents* contents) {
   Observe(contents);
 }
 
+void TabStripModel::WebContentsData::DidSetZoomLevel(
+    double old_zoom_level,
+    double new_zoom_level,
+    content::ZoomMode zoom_mode) {
+  DCHECK(contents_);
+  tab_strip_model_->WebContentsZoomChange(contents_, old_zoom_level,
+                                          new_zoom_level, zoom_mode);
+}
+
 void TabStripModel::WebContentsData::WebContentsDestroyed(
     WebContents* web_contents) {
   DCHECK_EQ(contents_, web_contents);
@@ -782,6 +796,15 @@ void TabStripModel::SetSelectionFromModel(
   SetSelection(source, NOTIFY_DEFAULT);
 }
 
+void TabStripModel::WebContentsZoomChange(content::WebContents* contents,
+                                          double old_zoom_level,
+                                          double new_zoom_level,
+                                          content::ZoomMode zoom_mode) {
+  FOR_EACH_OBSERVER(TabStripModelObserver, observers_,
+                    TabZoomChange(contents, old_zoom_level,
+                                  new_zoom_level, zoom_mode));
+}
+
 void TabStripModel::AddWebContents(WebContents* contents,
                                    int index,
                                    content::PageTransition transition,