Tracks changes to zoom icon and zoom percentage. Notifies browser window if the icon should be chan…

chrome/browser/ui/tab_contents/tab_contents_wrapper.h

Index: chrome/browser/ui/tab_contents/tab_contents_wrapper.h
diff --git a/chrome/browser/ui/tab_contents/tab_contents_wrapper.h b/chrome/browser/ui/tab_contents/tab_contents_wrapper.h
index 3bff9f272b290864bf73c6a935043394bed00dc2..7a16f9047fd2311659d606f06a1604022a0b0d55 100644
--- a/chrome/browser/ui/tab_contents/tab_contents_wrapper.h
+++ b/chrome/browser/ui/tab_contents/tab_contents_wrapper.h
@@ -45,6 +45,7 @@ class TabSpecificContentSettings;
 class ThumbnailGenerator;
 class TranslateTabHelper;
 class WebIntentPickerController;
+class ZoomController;
 
 #if defined(ENABLE_ONE_CLICK_SIGNIN)
 class OneClickSigninHelper;
@@ -221,6 +222,10 @@ class TabContentsWrapper : public content::WebContentsObserver {
     return web_intent_picker_controller_.get();
   }
 
+  ZoomController* zoom_controller() {
+    return zoom_controller_.get();
+  }
+
   // Overrides -----------------------------------------------------------------
 
   // content::WebContentsObserver overrides:
@@ -278,6 +283,8 @@ class TabContentsWrapper : public content::WebContentsObserver {
   // Handles displaying a web intents picker to the user.
   scoped_ptr<WebIntentPickerController> web_intent_picker_controller_;
 
+  scoped_ptr<ZoomController> zoom_controller_;
+
   // Per-tab observers ---------------------------------------------------------
   // (These provide no API for callers; objects that need to exist 1:1 with tabs
   // and silently do their thing live here.)