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

chrome/browser/chromeos/file_manager/file_browser_handlers.cc

Index: chrome/browser/chromeos/file_manager/file_browser_handlers.cc
diff --git a/chrome/browser/chromeos/file_manager/file_browser_handlers.cc b/chrome/browser/chromeos/file_manager/file_browser_handlers.cc
index 91def40d5b2ef96f3a4172eb268a19b6fdd38fdd..31592312227714e07142d668638eec8c61f7b123 100644
--- a/chrome/browser/chromeos/file_manager/file_browser_handlers.cc
+++ b/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));