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..e8e8361a2d73d1038007f75b7867d57da8cf2400 100644
--- a/chrome/browser/profiles/profile_impl_io_data.h
+++ b/chrome/browser/profiles/profile_impl_io_data.h
@@ -9,11 +9,15 @@
 #include "base/callback.h"
 #include "base/containers/hash_tables.h"
 #include "base/memory/ref_counted.h"
+#include "base/prefs/pref_store.h"
+#include "base/timer/timer.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
@@ -44,7 +48,7 @@ namespace storage {
 class SpecialStoragePolicy;
 }  // namespace storage
 
-class ProfileImplIOData : public ProfileIOData {
+class ProfileImplIOData : public ProfileIOData, public PrefStore::Observer {
  public:
   class Handle {
    public:
@@ -209,12 +213,21 @@ class ProfileImplIOData : public ProfileIOData {
   void ClearNetworkingHistorySinceOnIOThread(base::Time time,
                                              const base::Closure& completion);
 
+  void FlushPrefsToDisk();
+
+  // PrefStore::Observer
+  void OnPrefValueChanged(const std::string& key) override;
+  void OnInitializationCompleted(bool succeeded) override;
+
   mutable scoped_ptr<data_reduction_proxy::DataReductionProxyNetworkDelegate>
        network_delegate_;
 
   // Lazy initialization params.
   mutable scoped_ptr<LazyParams> lazy_params_;
 
+  mutable scoped_refptr<JsonPrefStore> network_json_store_;
+  base::Timer network_store_commit_timer_;
+
   mutable scoped_ptr<net::HttpTransactionFactory> main_http_factory_;
   mutable scoped_ptr<net::FtpTransactionFactory> ftp_factory_;
 
@@ -240,6 +253,8 @@ class ProfileImplIOData : public ProfileIOData {
   int app_cache_max_size_;
   int app_media_cache_max_size_;
 
+  base::WeakPtrFactory<ProfileImplIOData> factory_;
+
   DISALLOW_COPY_AND_ASSIGN(ProfileImplIOData);
 };