Add user customizable launch type for apps.

chrome/browser/extensions/extension_prefs.h

Index: chrome/browser/extensions/extension_prefs.h
diff --git a/chrome/browser/extensions/extension_prefs.h b/chrome/browser/extensions/extension_prefs.h
index d753e08405857750dab72dd35c98adee78e312f1..01226cdb8987c31484e5d35c29fae765a539557b 100644
--- a/chrome/browser/extensions/extension_prefs.h
+++ b/chrome/browser/extensions/extension_prefs.h
@@ -21,8 +21,21 @@
 // from there.
 class ExtensionPrefs {
  public:
+  // Key name for a preference that keeps track of per-extension settings. This
+  // is a dictionary object read from the Preferences file, keyed off of
+  // extension ids.
+  static const char kExtensionsPref[];
+
   typedef std::vector<linked_ptr<ExtensionInfo> > ExtensionsInfo;
 
+  // This enum is used for the launch type the user wants to use for an
+  // application.
+  enum LaunchType {
+    LAUNCH_PINNED,
+    LAUNCH_REGULAR,
+    LAUNCH_FULLSCREEN
+  };
+
   explicit ExtensionPrefs(PrefService* prefs, const FilePath& root_dir_);
 
   // Returns a copy of the Extensions prefs.
@@ -116,6 +129,9 @@ class ExtensionPrefs {
   bool AllowFileAccess(const std::string& extension_id);
   void SetAllowFileAccess(const std::string& extension_id, bool allow);
 
+  ExtensionPrefs::LaunchType GetLaunchType(const std::string& extension_id);
+  void SetLaunchType(const std::string& extension_id, LaunchType launch_type);
+
   // Saves ExtensionInfo for each installed extension with the path to the
   // version directory and the location. Blacklisted extensions won't be saved
   // and neither will external extensions the user has explicitly uninstalled.
@@ -185,12 +201,30 @@ class ExtensionPrefs {
   bool ReadExtensionPrefBoolean(const std::string& extension_id,
                                 const std::string& pref_key);
 
+  // Reads an integer pref from |ext| with key |pref_key|.
+  // Return false if the value does not exist.
+  bool ReadIntegerFromPref(DictionaryValue* ext, const std::string& pref_key,
+                           int* out_value);
+
+  // Reads an integer pref |pref_key| from extension with id |extension_id|.
+  bool ReadExtensionPrefInteger(const std::string& extension_id,
+                                const std::string& pref_key,
+                                int* out_value);
+
   // Ensures and returns a mutable dictionary for extension |id|'s prefs.
   DictionaryValue* GetOrCreateExtensionPref(const std::string& id);
 
   // Same as above, but returns NULL if it doesn't exist.
   DictionaryValue* GetExtensionPref(const std::string& id) const;
 
+  // Serializes the data and schedules a persistent save via the |PrefService|.
+  // Additionally fires a PREF_CHANGED notification with the top-level
+  // |kExtensionsPref| path set.
+  // TODO(andybons): Switch this to EXTENSION_PREF_CHANGED to be more granular.
+  // TODO(andybons): Use a ScopedPrefUpdate to update observers on changes to
+  // the mutable extension dictionary.
+  void SavePrefsAndNotify();
+
   // Checks if kPrefBlacklist is set to true in the DictionaryValue.
   // Return false if the value is false or kPrefBlacklist does not exist.
   // This is used to decide if an extension is blacklisted.