Add chrome://quit to shut down Chrome, including packaged apps.

chrome/common/url_constants.cc

Index: chrome/common/url_constants.cc
diff --git a/chrome/common/url_constants.cc b/chrome/common/url_constants.cc
index 5ee573586951588f3ba1dbaca5022623243fb5ec..0d6fc391e409f6549b213a9a920b5ca6569ac6db 100644
--- a/chrome/common/url_constants.cc
+++ b/chrome/common/url_constants.cc
@@ -74,6 +74,7 @@ const char kChromeUIProfileSigninConfirmationURL[] =
     "chrome://profile-signin-confirmation/";
 const char kChromeUIUserManagerURL[] = "chrome://user-manager/";
 const char kChromeUIPrintURL[] = "chrome://print/";
+const char kChromeUIQuitURL[] = "chrome://quit/";
 const char kChromeUIRestartURL[] = "chrome://restart/";
 const char kChromeUISettingsURL[] = "chrome://settings/";
 const char kChromeUISettingsFrameURL[] = "chrome://settings-frame/";
@@ -203,6 +204,7 @@ const char kChromeUIPredictorsHost[] = "predictors";
 const char kChromeUIPrintHost[] = "print";
 const char kChromeUIProfilerHost[] = "profiler";
 const char kChromeUIQuotaInternalsHost[] = "quota-internals";
+const char kChromeUIQuitHost[] = "quit";
 const char kChromeUIRestartHost[] = "restart";
 const char kChromeUISettingsHost[] = "settings";
 const char kChromeUISettingsFrameHost[] = "settings-frame";
@@ -623,6 +625,7 @@ const char* const kChromeDebugURLs[] = {
   content::kChromeUIGpuHangURL,
   content::kChromeUIPpapiFlashCrashURL,
   content::kChromeUIPpapiFlashHangURL,
+  chrome::kChromeUIQuitURL,
   chrome::kChromeUIRestartURL
 };
 const int kNumberOfChromeDebugURLs =