Add user data dir field to Mac platform apps

chrome/browser/web_applications/web_app_mac.h

Index: chrome/browser/web_applications/web_app_mac.h
diff --git a/chrome/browser/web_applications/web_app_mac.h b/chrome/browser/web_applications/web_app_mac.h
index ad244aa3947d199707e188db996eca5999357c53..f5476c9a93a75e0ab877a17bf29321754939ba1d 100644
--- a/chrome/browser/web_applications/web_app_mac.h
+++ b/chrome/browser/web_applications/web_app_mac.h
@@ -22,7 +22,9 @@ class WebAppShortcutCreator {
  public:
   // Creates a new shortcut based on information in |shortcut_info|.
   // |chrome_bundle_id| is the CFBundleIdentifier of the Chrome browser bundle.
+  // The shortcut store its data directory in |data_dir|.
   explicit WebAppShortcutCreator(
+      const FilePath& data_dir,
       const ShellIntegration::ShortcutInfo& shortcut_info,
       const string16& chrome_bundle_id);
   virtual ~WebAppShortcutCreator();
@@ -56,6 +58,10 @@ class WebAppShortcutCreator {
   virtual void RevealGeneratedBundleInFinder(
       const FilePath& generated_bundle) const;
 
+  // Path to the app's data directory. For example:
+  // ~/Library/Application Support/Chromium/Default/Web Applications/_crx_abc/
+  FilePath data_dir_;
+
   // Information about the app.
   ShellIntegration::ShortcutInfo info_;