Replace Increment/DecrementKeepAliveCount by ScopedKeepAlives

chrome/browser/lifetime/keep_alive_registry.cc

Index: chrome/browser/lifetime/keep_alive_registry.cc
diff --git a/chrome/browser/lifetime/keep_alive_registry.cc b/chrome/browser/lifetime/keep_alive_registry.cc
index dbe7cbc26bdc149b9f1cb964fd307ae26fa5bbe9..eba6275322aae901e8b9d84c193c6dcf79f0787c 100644
--- a/chrome/browser/lifetime/keep_alive_registry.cc
+++ b/chrome/browser/lifetime/keep_alive_registry.cc
@@ -4,6 +4,7 @@
 
 #include "chrome/browser/lifetime/keep_alive_registry.h"
 
+#include "chrome/browser/browser_process.h"
 #include "chrome/browser/lifetime/application_lifetime.h"
 #include "chrome/browser/lifetime/keep_alive_state_observer.h"
 #include "chrome/browser/lifetime/keep_alive_types.h"
@@ -96,12 +97,18 @@ void KeepAliveRegistry::Unregister(KeepAliveOrigin origin,
 }
 
 void KeepAliveRegistry::OnKeepingAliveChanged(bool new_keeping_alive) {
+  // Although we should have a browser process, if there is none,
+  // there is nothing to do.
+  if (!g_browser_process)
+    return;
+
   if (new_keeping_alive) {
     DVLOG(1) << "KeepAliveRegistry is now keeping the browser alive.";
-    chrome::IncrementKeepAliveCount();
+    g_browser_process->AddRefModule();
   } else {
     DVLOG(1) << "KeepAliveRegistry stopped keeping the browser alive.";
-    chrome::DecrementKeepAliveCount();
+    g_browser_process->ReleaseModule();
+    chrome::CloseAllBrowsersIfNeeded();
   }
 }