This adds a recovery mode to the diagnostics

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 5e0db9ae8000bfbf6b5abf4ab98061f90cc033e3..2f44eb95d80f6670d9ae2667fd9b66a335e81ed3 100644
--- a/chrome/common/chrome_switches.cc
+++ b/chrome/common/chrome_switches.cc
@@ -260,6 +260,9 @@ const char kDiagnostics[]                   = "diagnostics";
 // Sets the output format for diagnostic modes enabled by diagnostics flag.
 const char kDiagnosticsFormat[]             = "diagnostics-format";
 
+// Tells the diagnostics mode to do the requested recovery step(s).
+const char kDiagnosticsRecovery[]           = "diagnostics-recovery";
+
 // If set, the app list will be disabled at startup. Note this doesn't prevent
 // the app list from running, it just makes Chrome think the app list hasn't
 // been enabled (as in kEnableAppList) yet.