Install platform apps into a separate data directory

chrome/browser/shell_integration.h

Index: chrome/browser/shell_integration.h
diff --git a/chrome/browser/shell_integration.h b/chrome/browser/shell_integration.h
index 205fdf97904367e69936338460c411cdc9eeda31..84372273db1bd5416eb88534e8d5b3e89bcfe662 100644
--- a/chrome/browser/shell_integration.h
+++ b/chrome/browser/shell_integration.h
@@ -9,6 +9,7 @@
 #include <string>
 
 #include "base/basictypes.h"
+#include "base/file_path.h"
 #include "base/memory/ref_counted.h"
 #include "base/string16.h"
 #include "googleurl/src/gurl.h"
@@ -76,6 +77,7 @@ class ShellIntegration {
     std::string extension_id;
     string16 title;
     string16 description;
+    FilePath extension_path;
     SkBitmap favicon;
 
     bool create_on_desktop;