Delete code for and references to mini-gallery and theme install bubbles.

chrome/browser/ui/cocoa/browser_window_cocoa.mm

Index: chrome/browser/ui/cocoa/browser_window_cocoa.mm
diff --git a/chrome/browser/ui/cocoa/browser_window_cocoa.mm b/chrome/browser/ui/cocoa/browser_window_cocoa.mm
index 6f811f204cf4491f666b3fd320159cd702e11fd6..442efe7882480cc7230e55e6dada313cf2e5988d 100644
--- a/chrome/browser/ui/cocoa/browser_window_cocoa.mm
+++ b/chrome/browser/ui/cocoa/browser_window_cocoa.mm
@@ -35,7 +35,6 @@
 #include "chrome/browser/ui/cocoa/restart_browser.h"
 #include "chrome/browser/ui/cocoa/status_bubble_mac.h"
 #include "chrome/browser/ui/cocoa/task_manager_mac.h"
-#import "chrome/browser/ui/cocoa/theme_install_bubble_view.h"
 #import "chrome/browser/ui/cocoa/toolbar/toolbar_controller.h"
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
 #include "chrome/browser/ui/webui/task_manager_dialog.h"
@@ -427,10 +426,6 @@ void BrowserWindowCocoa::ShowCollectedCookiesDialog(
   new CollectedCookiesMac(GetNativeHandle(), wrapper);
 }
 
-void BrowserWindowCocoa::ShowThemeInstallBubble() {
-  ThemeInstallBubbleView::Show(window());
-}
-
 // We allow closing the window here since the real quit decision on Mac is made
 // in [AppController quit:].
 void BrowserWindowCocoa::ConfirmBrowserCloseWithPendingDownloads() {