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

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

Index: chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.mm
diff --git a/chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.mm b/chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.mm
index 338dedd92a7232a5f030531c903014a39afb2ac1..54ddcb0daa8bc99099af0bbebe1943488c66a933 100644
--- a/chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.mm
+++ b/chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.mm
@@ -592,6 +592,14 @@ void LocationBarViewMac::OnSetFocus() {
   OnChanged();
 }
 
+void LocationBarViewMac::ShowURL() {
+  omnibox_view_->ShowURL();
+}
+
+void LocationBarViewMac::HideURLAndShowOriginChip() {

[groby-ooo-7-16, 2014/03/20 23:38:53]

Since the counterpart is just ShowURL, maybe we should keep the name 'HideURL'.
I'm leery of anything with "And" in the function name, anyways.

[Justin Donnelly, 2014/03/21 21:15:57]

Done.

+  omnibox_view_->HideURL();
+}
+
 InstantController* LocationBarViewMac::GetInstant() {
   return browser_->instant_controller() ?
       browser_->instant_controller()->instant() : NULL;