Updates Zoom bubble layout and adds +/- buttons

chrome/browser/ui/views/location_bar/zoom_view.cc

Index: chrome/browser/ui/views/location_bar/zoom_view.cc
diff --git a/chrome/browser/ui/views/location_bar/zoom_view.cc b/chrome/browser/ui/views/location_bar/zoom_view.cc
index 97a332079a90d1930cc9e8340a0204a1b82eba89..08812e5367a19b3cd1694c68e0f34f9aabdee6a2 100644
--- a/chrome/browser/ui/views/location_bar/zoom_view.cc
+++ b/chrome/browser/ui/views/location_bar/zoom_view.cc
@@ -27,7 +27,9 @@ ZoomView::~ZoomView() {
 }
 
 void ZoomView::Update(zoom::ZoomController* zoom_controller) {
-  if (!zoom_controller || zoom_controller->IsAtDefaultZoom() ||
+  if (!zoom_controller ||
+      (!ZoomBubbleView::GetZoomBubble() &&
+       zoom_controller->IsAtDefaultZoom()) ||
       location_bar_delegate_->GetToolbarModel()->input_in_progress()) {
     SetVisible(false);
     ZoomBubbleView::CloseCurrentBubble();