[OriginChip] Add animations for the hiding and showing of the chip.

chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.h

Index: chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.h
diff --git a/chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.h b/chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.h
index f50b1bfc5737c0dc9f0129c13327c50f5d97d279..6130583183eddfc5fd80ad34cd83d4631577c04f 100644
--- a/chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.h
+++ b/chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.h
@@ -150,6 +150,7 @@ class LocationBarViewMac : public LocationBar,
   virtual void Update(const content::WebContents* contents) OVERRIDE;
   virtual void OnChanged() OVERRIDE;
   virtual void OnSetFocus() OVERRIDE;
+  virtual void ShowURL() OVERRIDE;
   virtual InstantController* GetInstant() OVERRIDE;
   virtual content::WebContents* GetWebContents() OVERRIDE;
   virtual ToolbarModel* GetToolbarModel() OVERRIDE;
@@ -174,6 +175,10 @@ class LocationBarViewMac : public LocationBar,
   // Activates the page action for the extension that has the given id.
   void ActivatePageAction(const std::string& extension_id);
 
+ protected:
+  // OmniboxEditController:
+  virtual void HideURL() OVERRIDE;
+
  private:
   friend ZoomDecorationTest;