Updates Zoom bubble layout and adds +/- buttons

chrome/browser/ui/views/location_bar/zoom_bubble_view.h

Index: chrome/browser/ui/views/location_bar/zoom_bubble_view.h
diff --git a/chrome/browser/ui/views/location_bar/zoom_bubble_view.h b/chrome/browser/ui/views/location_bar/zoom_bubble_view.h
index 1d2f2754faa15be9f6d1a83274df8b52af720df5..bcae3abef9f1429a4d8adee78c1d87dea9197262 100644
--- a/chrome/browser/ui/views/location_bar/zoom_bubble_view.h
+++ b/chrome/browser/ui/views/location_bar/zoom_bubble_view.h
@@ -20,6 +20,10 @@ namespace content {
 class WebContents;
 }
 
+namespace gfx {
+struct VectorIcon;
+}
+
 namespace views {
 class ImageButton;
 }  // namespace views
@@ -103,6 +107,13 @@ class ZoomBubbleView : public LocationBarBubbleDelegateView,
   // the zoom change.
   void SetExtensionInfo(const extensions::Extension* extension);
 
+  // Creates an ImageButton using vector |icon|, sets a tooltip with
+  // |tooltip_id|. Returns the button.
+  views::Button* CreateZoomButton(const gfx::VectorIcon& icon, int tooltip_id);
+
+  // Updates |label_| with the up to date zoom.
+  void UpdateZoomPercent();
+
   // Starts a timer which will close the bubble if |auto_close_| is true.
   void StartTimerIfNecessary();
 
@@ -127,12 +138,20 @@ class ZoomBubbleView : public LocationBarBubbleDelegateView,
   // Label displaying the zoom percentage.
   views::Label* label_;
 
+  // Action buttons that can change zoom.
+  views::Button* zoom_out_button_;
+  views::Button* zoom_in_button_;
+  views::Button* reset_button_;
+
   // The WebContents for the page whose zoom has changed.
   content::WebContents* web_contents_;
 
   // Whether the currently displayed bubble will automatically close.
   bool auto_close_;
 
+  // True when handling a button click event.
+  bool ignore_close_bubble_;
+
   // The immersive mode controller for the BrowserView containing
   // |web_contents_|.
   // Not owned.