Prevent Chrome from quitting when apps are open. (Mac)

chrome/browser/app_controller_mac.mm

Index: chrome/browser/app_controller_mac.mm
diff --git a/chrome/browser/app_controller_mac.mm b/chrome/browser/app_controller_mac.mm
index 70b0707c5dea2c852de1dd84aee4dbdbcca41080..cca2cdf0dd07540ed2957acadf64d6a4e39ee286 100644
--- a/chrome/browser/app_controller_mac.mm
+++ b/chrome/browser/app_controller_mac.mm
@@ -52,6 +52,7 @@
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/chrome_pages.h"
 #import "chrome/browser/ui/cocoa/apps/app_shim_menu_controller_mac.h"
+#include "chrome/browser/ui/cocoa/apps/quit_with_apps_controller_mac.h"
 #import "chrome/browser/ui/cocoa/bookmarks/bookmark_menu_bridge.h"
 #import "chrome/browser/ui/cocoa/browser_window_cocoa.h"
 #import "chrome/browser/ui/cocoa/browser_window_controller.h"
@@ -370,6 +371,12 @@ class AppControllerProfileObserver : public ProfileInfoCacheObserver {
       ![self shouldQuitWithInProgressDownloads])
     return NO;
 
+  // Check for active apps, and prompt the user if they really want to quit
+  // (and also quit the apps).
+  if (!browser_shutdown::IsTryingToQuit() &&
+      quitWithAppsController_.get() && !quitWithAppsController_->ShouldQuit())
+    return NO;
+
   // TODO(viettrungluu): Remove Apple Event handlers here? (It's safe to leave
   // them in, but I'm not sure about UX; we'd also want to disable other things
   // though.) http://crbug.com/40861
@@ -694,6 +701,10 @@ class AppControllerProfileObserver : public ProfileInfoCacheObserver {
   // main menu item titles are not yet initialized in awakeFromNib.
   [self initAppShimMenuController];
 
+  // If enabled, keep Chrome alive when apps are open instead of quitting all
+  // apps.
+  quitWithAppsController_ = new QuitWithAppsController();
+
   // Build up the encoding menu, the order of the items differs based on the
   // current locale (see http://crbug.com/7647 for details).
   // We need a valid g_browser_process to get the profile which is why we can't