bluetooth: setShouldCloseOnResignKey so that the chooser closes when it loses focus

chrome/browser/ui/cocoa/website_settings/chooser_bubble_ui_cocoa.mm

 // Copyright 2015 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/website_settings/chooser_bubble_ui_cocoa.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <cmath>
@@ skipping 87 matching lines @@
   base::scoped_nsobject<InfoBubbleWindow> window([[InfoBubbleWindow alloc]
       initWithContentRect:ui::kWindowSizeDeterminedLater
                 styleMask:NSBorderlessWindowMask
                   backing:NSBackingStoreBuffered
                     defer:NO]);
   [window setAllowedAnimations:info_bubble::kAnimateNone];
   [window setReleasedWhenClosed:NO];
   if ((self = [super initWithWindow:window
                        parentWindow:[self getExpectedParentWindow]
                          anchoredAt:NSZeroPoint])) {
-    [self setShouldCloseOnResignKey:NO];
+    [self setShouldCloseOnResignKey:YES];
     [self setShouldOpenAsKeyWindow:YES];
     [[self bubble] setArrowLocation:[self getExpectedArrowLocation]];
     bridge_ = bridge;
     NSNotificationCenter* center = [NSNotificationCenter defaultCenter];
     [center addObserver:self
                selector:@selector(parentWindowDidMove:)
                    name:NSWindowDidMoveNotification
                  object:[self getExpectedParentWindow]];
 
     base::string16 chooserTitle = chooserController->GetTitle();
@@ skipping 196 matching lines @@
 }
 
 void ChooserBubbleUiCocoa::UpdateAnchorPosition() {
   if (chooser_bubble_ui_controller_)
     [chooser_bubble_ui_controller_ updateAnchorPosition];
 }
 
 void ChooserBubbleUiCocoa::OnBubbleClosing() {
   chooser_bubble_ui_controller_ = nil;
 }