Add user data dir field to Mac platform apps

chrome/browser/web_applications/web_app.h

Index: chrome/browser/web_applications/web_app.h
diff --git a/chrome/browser/web_applications/web_app.h b/chrome/browser/web_applications/web_app.h
index 67c839e773f66c8ff032d72f025a325375590d68..4a6367fd7c65ece46c8d4e48f12177802a4f89e2 100644
--- a/chrome/browser/web_applications/web_app.h
+++ b/chrome/browser/web_applications/web_app.h
@@ -14,8 +14,22 @@
 #include "chrome/browser/shell_integration.h"
 #include "chrome/common/web_apps.h"
 
+class Extension;
+
 namespace web_app {
 
+// Gets the user data directory for given web app. The path for the directory is
+// based on |extension_id|. If |extension_id| is empty then |url| is used
+// to construct a unique ID.
+FilePath GetWebAppDataDirectory(const FilePath& profile_path,
+                                const std::string& extension_id,
+                                const GURL& url);
+
+// Gets the user data directory to use for |extension| located inside
+// |profile_path|.
+FilePath GetWebAppDataDirectory(const FilePath& profile_path,
+                                const Extension& extension);
+
 // Compute a deterministic name based on data in the shortcut_info.
 std::string GenerateApplicationNameFromInfo(
     const ShellIntegration::ShortcutInfo& shortcut_info);
@@ -43,9 +57,6 @@ void CreateShortcut(
 // Returns true if given url is a valid web app url.
 bool IsValidUrl(const GURL& url);
 
-// Returns data dir for web apps for given profile path.
-FilePath GetDataDir(const FilePath& profile_path);
-
 #if defined(TOOLKIT_VIEWS)
 // Extracts icons info from web app data. Take only square shaped icons and
 // sort them from smallest to largest.
@@ -67,9 +78,6 @@ namespace internals {
 bool CheckAndSaveIcon(const FilePath& icon_file, const SkBitmap& image);
 #endif
 
-FilePath GetWebAppDataDirectory(const FilePath& root_dir,
-                                const ShellIntegration::ShortcutInfo& info);
-
 // Does the actual job of creating a shortcut (see CreateShortcut() above).
 // This must be called on the file thread.
 void CreateShortcutTask(const FilePath& web_app_path,