Make SDCH dictionaries persistent across browser restart.

chrome/browser/profiles/profile_impl_io_data.h

Index: chrome/browser/profiles/profile_impl_io_data.h
diff --git a/chrome/browser/profiles/profile_impl_io_data.h b/chrome/browser/profiles/profile_impl_io_data.h
index 68b8260e43e88f9beb701d3d3bed1b1b0d7105d7..1fd74a6721e172539f46390ad4e30d64bb5f7140 100644
--- a/chrome/browser/profiles/profile_impl_io_data.h
+++ b/chrome/browser/profiles/profile_impl_io_data.h
@@ -9,11 +9,14 @@
 #include "base/callback.h"
 #include "base/containers/hash_tables.h"
 #include "base/memory/ref_counted.h"
+#include "base/prefs/pref_store.h"
 #include "chrome/browser/custom_handlers/protocol_handler_registry.h"
 #include "chrome/browser/net/chrome_url_request_context_getter.h"
 #include "chrome/browser/profiles/profile_io_data.h"
 #include "content/public/browser/cookie_store_factory.h"
 
+class JsonPrefStore;
+
 namespace chrome_browser_net {
 class Predictor;
 }  // namespace chrome_browser_net
@@ -215,6 +218,8 @@ class ProfileImplIOData : public ProfileIOData {
   // Lazy initialization params.
   mutable scoped_ptr<LazyParams> lazy_params_;
 
+  mutable scoped_refptr<JsonPrefStore> network_json_store_;
+
   mutable scoped_ptr<net::HttpTransactionFactory> main_http_factory_;
   mutable scoped_ptr<net::FtpTransactionFactory> ftp_factory_;