File manager: support for zipping selected files.

chrome/utility/chrome_content_utility_client.h

Index: chrome/utility/chrome_content_utility_client.h
diff --git a/chrome/utility/chrome_content_utility_client.h b/chrome/utility/chrome_content_utility_client.h
index 0aba6093c71bce4fdbed45b96693ab5a9a4e941f..3b40de137f430512f5f8a813877b04863856cbd8 100644
--- a/chrome/utility/chrome_content_utility_client.h
+++ b/chrome/utility/chrome_content_utility_client.h
@@ -16,6 +16,7 @@ class Importer;
 
 namespace base {
 class DictionaryValue;
+class FileDescriptor;
 class Thread;
 }
 
@@ -63,6 +64,12 @@ class ChromeContentUtilityClient : public content::ContentUtilityClient {
       const std::vector<unsigned char>& encoded_data);
   void OnParseJSON(const std::string& json);
 
+#if defined(OS_CHROMEOS)
+  void OnCreateZipFile(const FilePath& src_dir,
+                       const std::vector<FilePath>& src_relative_paths,
+                       const base::FileDescriptor& dest_fd);
+#endif  // defined(OS_CHROMEOS)
+
 #if defined(OS_WIN)
   // Helper method for Windows.
   // |highest_rendered_page_number| is set to -1 on failure to render any page.