Add content_settings::PrefProvider to HostContentSettingsMap.

chrome/browser/content_settings/pref_content_settings_provider.h

Index: chrome/browser/content_settings/pref_content_settings_provider.h
diff --git a/chrome/browser/content_settings/pref_content_settings_provider.h b/chrome/browser/content_settings/pref_content_settings_provider.h
index 8ed966424c9bef008d51e51043e372687bf837c5..31ccdb1be8e49dff9afe6945a6a3740cfb6e255b 100644
--- a/chrome/browser/content_settings/pref_content_settings_provider.h
+++ b/chrome/browser/content_settings/pref_content_settings_provider.h
@@ -8,6 +8,10 @@
 
 // A content settings provider that takes its settings out of the pref service.
 
+#include <map>
+#include <string>
+#include <utility>
+
 #include "base/basictypes.h"
 #include "base/synchronization/lock.h"
 #include "chrome/browser/content_settings/content_settings_provider.h"
@@ -86,6 +90,119 @@ class PrefDefaultProvider : public DefaultProviderInterface,
   DISALLOW_COPY_AND_ASSIGN(PrefDefaultProvider);
 };
 
+class PrefProvider : public ProviderInterface,
+                     public NotificationObserver {
+ public:
+  static void RegisterUserPrefs(PrefService* prefs);
+
+  explicit PrefProvider(Profile* profile);
+  virtual ~PrefProvider();
+
+  // ContentSettingsProvider implementation.
+  virtual bool ContentSettingsTypeIsManaged(
+      ContentSettingsType content_type);
+
+  virtual ContentSetting GetContentSetting(
+      const GURL& requesting_url,
+      const GURL& embedding_url,
+      ContentSettingsType content_type,
+      const ResourceIdentifier& resource_identifier) const;
+
+  virtual void SetContentSetting(
+      const ContentSettingsPattern& requesting_pattern,
+      const ContentSettingsPattern& embedding_pattern,
+      ContentSettingsType content_type,
+      const ResourceIdentifier& resource_identifier,
+      ContentSetting content_setting);
+
+  virtual void GetAllContentSettingsRules(
+      ContentSettingsType content_type,
+      const ResourceIdentifier& resource_identifier,
+      Rules* content_setting_rules) const;
+
+  virtual void ClearAllContentSettingsRules(
+      ContentSettingsType content_type);
+
+  virtual void ResetToDefaults();
+
+  // NotificationObserver implementation.
+  virtual void Observe(NotificationType type,
+                       const NotificationSource& source,
+                       const NotificationDetails& details);
+
+ private:
+  typedef std::pair<ContentSettingsType, std::string>
+      ContentSettingsTypeResourceIdentifierPair;
+  typedef std::map<ContentSettingsTypeResourceIdentifierPair, ContentSetting>
+      ResourceContentSettings;
+
+  struct ExtendedContentSettings {
+    ContentSettings content_settings;
+    ResourceContentSettings content_settings_for_resources;
+  };
+
+  typedef std::map<std::string, ExtendedContentSettings> HostContentSettings;
+
+  // Various migration methods (old cookie, popup and per-host data gets
+  // migrated to the new format).
+  void MigrateObsoletePerhostPref(PrefService* prefs);
+  void MigrateObsoletePopupsPref(PrefService* prefs);
+
+  bool AllDefault(const ExtendedContentSettings& settings) const;
+
+  void ReadExceptions(bool overwrite);
+
+  bool RequiresResourceIdentifier(
+      ContentSettingsType content_type) const;
+
+  void CanonicalizeContentSettingsExceptions(
+      DictionaryValue* all_settings_dictionary);
+
+  void GetSettingsFromDictionary(
+      const DictionaryValue* dictionary,
+      ContentSettings* settings);
+
+  void GetResourceSettingsFromDictionary(
+      const DictionaryValue* dictionary,
+      ResourceContentSettings* settings);
+
+  void NotifyObservers(const ContentSettingsDetails& details);
+
+  void UnregisterObservers();
+
+  Profile* profile_;
+
+  // Whether this settings map is for an OTR session.
+  bool is_off_the_record_;
+
+  // Used around accesses to the content_settings_ object to guarantee
+  // thread safety.
+  mutable base::Lock lock_;
+
+  PrefChangeRegistrar pref_change_registrar_;
+  NotificationRegistrar notification_registrar_;
+
+  // Copies of the pref data, so that we can read it on threads other than the
+  // UI thread.
+  HostContentSettings host_content_settings_;
+
+  // Differences to the preference-stored host content settings for
+  // off-the-record settings.
+  HostContentSettings off_the_record_settings_;
+
+  // Whether we are currently updating preferences, this is used to ignore
+  // notifications from the preferences service that we triggered ourself.
+  bool updating_preferences_;
+
+  // Do not fire any Notifications as long as we are in the constructor.
+  bool initializing_;
+
+  // LEGACY: TBR
+  ContentSettings GetNonDefaultContentSettings(const GURL& url) const;
+
+  DISALLOW_COPY_AND_ASSIGN(PrefProvider);
+};
+
 }  // namespace content_settings
 
 #endif  // CHROME_BROWSER_CONTENT_SETTINGS_PREF_CONTENT_SETTINGS_PROVIDER_H_