Install platform apps into a separate data directory

chrome/common/extensions/extension_file_util.h

Index: chrome/common/extensions/extension_file_util.h
diff --git a/chrome/common/extensions/extension_file_util.h b/chrome/common/extensions/extension_file_util.h
index c1241f17555c84f4980a9e06c3f0fcd77cc0d24c..b597fcc4d4a07db98cc452f42b8a722602a31f41 100644
--- a/chrome/common/extensions/extension_file_util.h
+++ b/chrome/common/extensions/extension_file_util.h
@@ -28,12 +28,14 @@ namespace extension_file_util {
 extern const char kInstallDirectoryName[];
 
 // Copies |unpacked_source_dir| into the right location under |extensions_dir|.
+// Deletes the source directory if |should_delete_source| is true.
 // The destination directiory is returned on success, or empty path is returned
 // on failure.
 FilePath InstallExtension(const FilePath& unpacked_source_dir,
                           const std::string& id,
                           const std::string& version,
-                          const FilePath& extensions_dir);
+                          const FilePath& extensions_dir,
+                          bool should_delete_source);
 
 // Removes all versions of the extension with |id| from |extensions_dir|.
 void UninstallExtension(const FilePath& extensions_dir,