Updates Zoom bubble layout and adds +/- buttons

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

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_LOCATION_BAR_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_LOCATION_BAR_VIEW_H_
 
 #include <stddef.h>
 
 #include <string>
@@ skipping 292 matching lines @@
   void ShowFirstRunBubble() override;
   GURL GetDestinationURL() const override;
   WindowOpenDisposition GetWindowOpenDisposition() const override;
   ui::PageTransition GetPageTransition() const override;
   void AcceptInput() override;
   void FocusSearch() override;
   void UpdateContentSettingsIcons() override;
   void UpdateManagePasswordsIconAndBubble() override;
   void UpdateSaveCreditCardIcon() override;
   void UpdateBookmarkStarVisibility() override;
+  void UpdateZoomViewVisibility() override;
   void UpdateLocationBarVisibility(bool visible, bool animation) override;
   void SaveStateToContents(content::WebContents* contents) override;
   const OmniboxView* GetOmniboxView() const override;
   LocationBarTesting* GetLocationBarForTesting() override;
 
   // LocationBarTesting:
   bool GetBookmarkStarVisibility() override;
   bool TestContentSettingImagePressed(size_t index) override;
 
   // views::View:
@@ skipping 91 matching lines @@
   // Add/RemoveObserver calls.
   TemplateURLService* template_url_service_;
 
   // Tracks this preference to determine whether bookmark editing is allowed.
   BooleanPrefMember edit_bookmarks_enabled_;
 
   DISALLOW_COPY_AND_ASSIGN(LocationBarView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_LOCATION_BAR_VIEW_H_