Fix BaseBubbleController default behavior.

chrome/browser/ui/cocoa/base_bubble_controller.mm

 // 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.
 
 #import "chrome/browser/ui/cocoa/base_bubble_controller.h"
 
 #include "base/logging.h"
 #include "base/mac/bundle_locations.h"
 #include "base/mac/mac_util.h"
 #include "base/mac/scoped_nsobject.h"
@@ skipping 22 matching lines @@
 
 - (id)initWithWindowNibPath:(NSString*)nibPath
                parentWindow:(NSWindow*)parentWindow
                  anchoredAt:(NSPoint)anchoredAt {
   nibPath = [base::mac::FrameworkBundle() pathForResource:nibPath
                                                    ofType:@"nib"];
   if ((self = [super initWithWindowNibPath:nibPath owner:self])) {
     parentWindow_ = parentWindow;
     anchor_ = anchoredAt;
     shouldOpenAsKeyWindow_ = YES;
+    shouldCloseOnResignKey_ = YES;
 
     // Watch to see if the parent window closes, and if so, close this one.
     NSNotificationCenter* center = [NSNotificationCenter defaultCenter];
     [center addObserver:self
                selector:@selector(parentWindowWillClose:)
                    name:NSWindowWillCloseNotification
                  object:parentWindow_];
   }
   return self;
 }
@@ skipping 233 matching lines @@
 
 - (void)activateTabWithContents:(content::WebContents*)newContents
                previousContents:(content::WebContents*)oldContents
                         atIndex:(NSInteger)index
                          reason:(int)reason {
   // The user switched tabs; close.
   [self close];
 }
 
 @end  // BaseBubbleController