Migrate the IndexedDB backend from Blink to Chromium

content/public/common/content_switches.cc

Index: content/public/common/content_switches.cc
diff --git a/content/public/common/content_switches.cc b/content/public/common/content_switches.cc
index b8dcbc63fd57ffff2da8263b1aa531e75bb5d47e..1c110fd8289c5ff5253a684d1faa3f3bdbb6b092 100644
--- a/content/public/common/content_switches.cc
+++ b/content/public/common/content_switches.cc
@@ -551,6 +551,10 @@ const char kNoSandbox[]                     = "no-sandbox";
 // finishes.
 const char kAllowNoSandboxJob[]             = "allow-no-sandbox-job";
 
+// Use the new IndexedDB backend implemented in Chromium. By default,
+// the old backend implemented in Blink is used.
+const char kNewIndexedDB[]                  = "new-indexeddb";
+
 // Specifies a command that should be used to launch the plugin process.  Useful
 // for running the plugin process through purify or quantify.  Ex:
 //   --plugin-launcher="path\to\purify /Run=yes"