gdata: Convert public synchronous functions in GDataFileSystem to asynchronous.

chrome/browser/chromeos/extensions/file_handler_util.h

Index: chrome/browser/chromeos/extensions/file_handler_util.h
diff --git a/chrome/browser/chromeos/extensions/file_handler_util.h b/chrome/browser/chromeos/extensions/file_handler_util.h
index 84b0e2f00b4ce38ce59a61c5fe678361898c919c..f6cf964208070fd6e27becddfb70a1547d616322 100644
--- a/chrome/browser/chromeos/extensions/file_handler_util.h
+++ b/chrome/browser/chromeos/extensions/file_handler_util.h
@@ -106,10 +106,9 @@ class FileTaskExecutor : public base::RefCountedThreadSafe<FileTaskExecutor> {
       const std::vector<GURL>& file_urls);
 
   void ExecuteFailedOnUIThread();
-  void ExecuteFileActionsOnUIThread(const std::string& file_system_name,
-                                    const GURL& file_system_root,
-                                    const FileDefinitionList& file_list,
-                                    int handler_id);
+  void ExecuteFileActionsOnUIThread(
+      const FileDefinitionList& file_list,

[tbarzic, 2012/06/08 17:59:13]

this should probably be in the previoius line

[hshi1, 2012/06/08 18:21:41]

Done.

+      const base::Closure& callback);
   void SetupPermissionsAndDispatchEvent(const std::string& file_system_name,
                                         const GURL& file_system_root,
                                         const FileDefinitionList& file_list,
@@ -121,7 +120,17 @@ class FileTaskExecutor : public base::RefCountedThreadSafe<FileTaskExecutor> {
   void InitHandlerHostFileAccessPermissions(
       const FileDefinitionList& file_list,
       const extensions::Extension* handler_extension,
-      const std::string& action_id);
+      const std::string& action_id,
+      const base::Closure& callback);
+
+  // Invoked upon completion of InitHandlerHostFileAccessPermissions initiated
+  // by ExecuteFileActionsOnUIThread.
+  void OnInitAccessForExecuteFileActionsOnUIThread(
+      const std::string& file_system_name,
+      const GURL& file_system_root,
+      const FileDefinitionList& file_list,
+      int handler_pid);
+
   // Registers file permissions from |handler_host_permissions_| with
   // ChildProcessSecurityPolicy for process with id |handler_pid|.
   void SetupHandlerHostFileAccessPermissions(int handler_pid);