Add support for drive files to chrome.fileBrowserHandler.selectFile

chrome/browser/chromeos/extensions/file_browser_handler_api.h

Index: chrome/browser/chromeos/extensions/file_browser_handler_api.h
diff --git a/chrome/browser/chromeos/extensions/file_browser_handler_api.h b/chrome/browser/chromeos/extensions/file_browser_handler_api.h
index 74ca9bcd9c74d1639fe0eb5021579f1c93b97246..2229b360e8cd3860f0b5380ba025f05b3d95e150 100644
--- a/chrome/browser/chromeos/extensions/file_browser_handler_api.h
+++ b/chrome/browser/chromeos/extensions/file_browser_handler_api.h
@@ -6,6 +6,7 @@
 #define CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_BROWSER_HANDLER_API_H_
 
 #include <string>
+#include <vector>
 
 #include "base/file_path.h"
 #include "chrome/browser/extensions/extension_function.h"
@@ -51,20 +52,23 @@ class FileHandlerSelectFileFunction : public AsyncExtensionFunction {
   virtual bool RunImpl() OVERRIDE;
 
  private:
-  // Calls |DoCreateFile| on file thread and invokes the callback.
-  void CreateFileOnFileThread(bool success,
-                              const std::string& file_system_name,
-                              const GURL& file_system_root);
+  typedef base::Callback<void(const FilePath& virtual_path)>
+      GrantPermissionsCallback;
 
   // Called on UI thread after the file gets created.
-  void OnFileCreated(bool success,
-                     const std::string& file_system_name,
-                     const GURL& file_system_root);
+  void OnFileSystemOpened(bool success,
+                          const std::string& file_system_name,
+                          const GURL& file_system_root);
 
   // Grants file access permissions for the created file to the extension with
   // cros mount point provider and child process security policy.
-  // Returns virtual path for which has been given permission.
-  FilePath GrantPermissions();
+  void GrantPermissions(const GrantPermissionsCallback& callback);
+
+  // Callback called when we collect all paths and permissions that should be
+  // given to the caller render process in order for it to normally access file.
+  void OnGotPermissionsToGrant(
+      const GrantPermissionsCallback& callback,
+      const FilePath& virtual_path);
 
   // Sends response to the extension.
   void Respond(bool success,
@@ -79,6 +83,10 @@ class FileHandlerSelectFileFunction : public AsyncExtensionFunction {
   // Full file system path of the selected file.
   FilePath full_path_;
 
+  // List of permissions and paths that have to be granted for the selected
+  // files.
+  std::vector<std::pair<FilePath, int> > permissions_to_grant_;
+
   // |file_selector_for_test_| and |disable_geture_check_for_test_| are used
   // primary in testing to override file selector to be used in the function
   // implementation and disable user gesture check.