Install platform apps into a separate data directory

chrome/common/extensions/extension.cc

Index: chrome/common/extensions/extension.cc
diff --git a/chrome/common/extensions/extension.cc b/chrome/common/extensions/extension.cc
index 2cc7c127384022e1a7cd0f4a8f7f755b8074c62a..56d6924283b2ce175a5aa4fbd56608931ba25df1 100644
--- a/chrome/common/extensions/extension.cc
+++ b/chrome/common/extensions/extension.cc
@@ -382,6 +382,15 @@ GURL Extension::GetBackgroundURL() const {
   }
 }
 
+bool Extension::RequiresSeparateUserDataDirectory() const {
+  // Currently separate data directories are only supported on Mac OSX.
+#if defined(OS_MACOSX)
+  return is_platform_app();
+#else
+  return false;
+#endif
+}
+
 bool Extension::IsResourceWebAccessible(const std::string& relative_path)
     const {
   // For old manifest versions which do not specify web_accessible_resources