Make SDCH dictionaries persistent across browser restart.

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 220bf60ecf2d0006e19e03949cd32a54cac33f0b..3744be6d310c1c45235f327a77150e61c87b8c15 100644
--- a/chrome/common/chrome_switches.cc
+++ b/chrome/common/chrome_switches.cc
@@ -322,6 +322,9 @@ const char kDisableQuicPortSelection[]      = "disable-quic-port-selection";
 // Prevents the save password bubble from being enabled.
 const char kDisableSavePasswordBubble[] = "disable-save-password-bubble";
 
+// Prevents SDCH persistence from being used.
+const char kDisableSdchPersistence[] = "disable-sdch-persistence";
+
 // Disables the "search button in omnibox" experiment.
 const char kDisableSearchButtonInOmnibox[]  =
     "disable-search-button-in-omnibox";
@@ -547,6 +550,9 @@ const char kEnableSavePasswordBubble[]      = "enable-save-password-bubble";
 // Enables SDCH for https schemes.
 const char kEnableSdchOverHttps[] = "enable-sdch-over-https";
 
+// Enables SDCH persistence.
+const char kEnableSdchPersistence[] = "enable-sdch-persistence";
+
 // Controls which branch of the "search button in omnibox" experiment is
 // enabled.
 //