Fix spurious visibility events when committing Instant.

chrome/browser/ui/cocoa/browser_window_controller.mm

Index: chrome/browser/ui/cocoa/browser_window_controller.mm
diff --git a/chrome/browser/ui/cocoa/browser_window_controller.mm b/chrome/browser/ui/cocoa/browser_window_controller.mm
index 5bf5d07407aace99a8e9ce0e97008f686b7457f3..1652e0c2c6acfe5b002721280b22e7bb69542c93 100644
--- a/chrome/browser/ui/cocoa/browser_window_controller.mm
+++ b/chrome/browser/ui/cocoa/browser_window_controller.mm
@@ -1554,13 +1554,8 @@ enum {
   TabContents* tabContents = TabContents::FromWebContents(contents);
   // Without the .get(), xcode fails.
   [infoBarContainerController_.get() changeTabContents:tabContents];
-}
 
-- (void)onReplaceTabWithContents:(WebContents*)contents {
-  // Simply remove the preview view if it exists; the tab strip
-  // controller will reinstall the view as the active view.
-  [previewableContentsController_ hidePreview];
-  [self updateBookmarkBarVisibilityWithAnimation:NO];
+  [previewableContentsController_ onActivateTabWithContents:contents];
 }
 
 - (void)onTabChanged:(TabStripModelObserver::TabChangeType)change
@@ -1584,10 +1579,6 @@ enum {
   [infoBarContainerController_ tabDetachedWithContents:tabContents];
 }
 
-- (void)onInsertTabWithContents:(WebContents*)contents {
-  [previewableContentsController_ onInsertTabWithContents:contents];
-}
-
 - (void)userChangedTheme {
   // TODO(dmaclach): Instead of redrawing the whole window, views that care
   // about the active window state should be registering for notifications.