Elevated install of recovery component (component update part)

chrome/common/chrome_switches.cc

Index: chrome/common/chrome_switches.cc
diff --git a/chrome/common/chrome_switches.cc b/chrome/common/chrome_switches.cc
index 7047c17499caf6a5d7d5bae3e9febaf2c4053abb..fe80e25e39afcbbeb4579b681ac03463bcff2204 100644
--- a/chrome/common/chrome_switches.cc
+++ b/chrome/common/chrome_switches.cc
@@ -775,6 +775,10 @@ const char kInstallChromeApp[]              = "install-chrome-app";
 // app/extension ID given, and then prompt the user to download and install it.
 const char kInstallFromWebstore[]           = "install-from-webstore";
 
+// Tries to install recovery component with elevated privilege without opening
+// any window.
+const char kInstallRecoveryComponent[]      = "install-recovery-component";
+
 // Marks a renderer as an Instant process.
 const char kInstantProcess[]                = "instant-process";