Updates Zoom bubble layout and adds +/- buttons

chrome/browser/ui/location_bar/location_bar.h

Index: chrome/browser/ui/location_bar/location_bar.h
diff --git a/chrome/browser/ui/location_bar/location_bar.h b/chrome/browser/ui/location_bar/location_bar.h
index 91da7b782a92c9f6bad1626a61b03201908a07eb..e90e3f9565126a91bedc929cde117f9a265aab3d 100644
--- a/chrome/browser/ui/location_bar/location_bar.h
+++ b/chrome/browser/ui/location_bar/location_bar.h
@@ -58,6 +58,9 @@ class LocationBar {
   // Updates the visibility of the bookmark star.
   virtual void UpdateBookmarkStarVisibility() = 0;
 
+  // Updates the visibility of the zoom icon.
+  virtual void UpdateZoomViewVisibility() = 0;
+
   // Updates the visibility of the location bar. Animates the transition if
   // |animate| is true.
   virtual void UpdateLocationBarVisibility(bool visible, bool animate) = 0;