Files.app: Separate Gallery.app should be the default handler for image files.

BUG=380081

Review URL: https://codereview.chromium.org/310753003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@274524 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/chromeos/file_manager/file_browser_handlers.cc

@@ -490,6 +490,7 @@ bool IsFallbackFileBrowserHandler(const file_tasks::TaskDescriptor& task) {
            task.task_type == file_tasks::TASK_TYPE_FILE_HANDLER) &&
           (task.app_id == kFileManagerAppId ||
            task.app_id == kVideoPlayerAppId ||
+           task.app_id == kGalleryAppId ||
            task.app_id == extension_misc::kQuickOfficeComponentExtensionId ||
            task.app_id == extension_misc::kQuickOfficeInternalExtensionId ||
            task.app_id == extension_misc::kQuickOfficeExtensionId));