Remove Increment/DecrementKeepAliveCount from AppsClient

extensions/shell/browser/shell_app_window_client.cc

Index: extensions/shell/browser/shell_app_window_client.cc
diff --git a/extensions/shell/browser/shell_app_window_client.cc b/extensions/shell/browser/shell_app_window_client.cc
index 734df75e9546a351041fafd96ae292588f77181d..412304a23207fdd5aefab1ff19bb06add0a993cd 100644
--- a/extensions/shell/browser/shell_app_window_client.cc
+++ b/extensions/shell/browser/shell_app_window_client.cc
@@ -40,15 +40,6 @@ NativeAppWindow* ShellAppWindowClient::CreateNativeAppWindow(
   return native_app_window;
 }
 
-void ShellAppWindowClient::IncrementKeepAliveCount() {
-  // app_shell runs until the system powers off, so it doesn't need to track
-  // open apps or windows to keep itself alive.
-}
-
-void ShellAppWindowClient::DecrementKeepAliveCount() {
-  // See IncrementKeepAliveCount().
-}
-
 void ShellAppWindowClient::OpenDevToolsWindow(
     content::WebContents* web_contents,
     const base::Closure& callback) {