[Mac] Enter should trigger the buttons in the new avatar bubble.

chrome/browser/ui/cocoa/profiles/profile_chooser_controller.mm

 // Copyright 2014 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 <Cocoa/Cocoa.h>
 
 #import "chrome/browser/ui/cocoa/profiles/profile_chooser_controller.h"
 
 #include "base/mac/bundle_locations.h"
 #include "base/prefs/pref_service.h"
@@ skipping 18 matching lines @@
 #include "chrome/browser/signin/signin_manager_factory.h"
 #include "chrome/browser/signin/signin_promo.h"
 #include "chrome/browser/signin/signin_ui_util.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_commands.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/chrome_pages.h"
 #include "chrome/browser/ui/chrome_style.h"
 #import "chrome/browser/ui/cocoa/info_bubble_view.h"
 #import "chrome/browser/ui/cocoa/info_bubble_window.h"
+#import "chrome/browser/ui/cocoa/key_equivalent_constants.h"
 #import "chrome/browser/ui/cocoa/profiles/user_manager_mac.h"
 #include "chrome/browser/ui/singleton_tabs.h"
 #include "chrome/browser/ui/user_manager.h"
 #include "chrome/browser/ui/webui/signin/login_ui_service.h"
 #include "chrome/browser/ui/webui/signin/login_ui_service_factory.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/grit/chromium_strings.h"
 #include "chrome/grit/generated_resources.h"
 #include "components/signin/core/browser/mutable_profile_oauth2_token_service.h"
@@ skipping 2044 matching lines @@
   ui::ResourceBundle* rb = &ui::ResourceBundle::GetSharedInstance();
   NSImage* image = rb->GetNativeImageNamed(imageResourceId).ToNSImage();
   [button setDefaultImage:image];
   [button setHoverImage:image];
   [button setPressedImage:image];
   [button setImagePosition:NSImageLeft];
   [button setAlignment:NSLeftTextAlignment];
   [button setBordered:NO];
   [button setTarget:self];
   [button setAction:action];
+  [button setKeyEquivalent:kKeyEquivalentReturn];
 
   return button.autorelease();
 }
 
 - (NSButton*)linkButtonWithTitle:(NSString*)title
                      frameOrigin:(NSPoint)frameOrigin
                           action:(SEL)action {
   base::scoped_nsobject<NSButton> link(
       [[HyperlinkButtonCell buttonWithString:title] retain]);
 
@@ skipping 79 matching lines @@
 }
 
 - (bool)shouldShowGoIncognito {
   bool incognitoAvailable =
       IncognitoModePrefs::GetAvailability(browser_->profile()->GetPrefs()) !=
           IncognitoModePrefs::DISABLED;
   return incognitoAvailable && !browser_->profile()->IsGuestSession();
 }
 
 @end