Re-enable photo importer in Files.app.

It has been disabled because of bugs.

TEST=Enter usb drive, right click on the usb drive item in the left nav in Files.app, choose Import media.
BUG=176203

Review URL: https://codereview.chromium.org/12255024

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@182422 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/chromeos/extensions/file_browser_event_router.cc

@@ -673,9 +673,7 @@ void FileBrowserEventRouter::ShowRemovableDeviceInFileManager(
       chromeos::ScreenLocker::default_screen_locker())
     return;
 
-  // To enable Photo Import call file_manager_util::OpenActionChoiceDialog
-  // instead.
-  file_manager_util::ViewRemovableDrive(base::FilePath(mount_path));
+  file_manager_util::OpenActionChoiceDialog(FilePath(mount_path));
 }
 
 void FileBrowserEventRouter::OnDiskAdded(

chrome/browser/resources/file_manager/main.html

@@ -124,7 +124,7 @@
       <command id="format" i18n-values="label:FORMAT_DEVICE_BUTTON_LABEL"
           ></command>
       <command id="import-photos" i18n-values="label:PHOTO_IMPORT_TITLE"
-          hidden></command>
+          ></command>
 
       <command id="volume-help" i18n-values="label:DRIVE_MENU_HELP"
           ></command>