Add verbs API to file handlers. Modify the Chrome OS UI so that it displayes the internationalized …

ui/file_manager/file_manager/foreground/js/file_tasks.js

Index: ui/file_manager/file_manager/foreground/js/file_tasks.js
diff --git a/ui/file_manager/file_manager/foreground/js/file_tasks.js b/ui/file_manager/file_manager/foreground/js/file_tasks.js
index 1096215199a1d6691d7d238adef44fd5e7bc1e8b..1cdceb4d7f0105c0f49e04f31e629b3344af0008 100644
--- a/ui/file_manager/file_manager/foreground/js/file_tasks.js
+++ b/ui/file_manager/file_manager/foreground/js/file_tasks.js
@@ -141,19 +141,7 @@ FileTasks.create = function(volumeManager, metadataModel, directoryModel, ui,
   });
 
   var defaultTaskPromise = tasksPromise.then(function(tasks) {
-    for (var i = 0; i < tasks.length; i++) {
-      if (tasks[i].isDefault) {
-        return tasks[i];
-      }
-    }
-    // If we haven't picked a default task yet, then just pick the first one
-    // which is not generic file handler.
-    for (var i = 0; i < tasks.length; i++) {
-      if (!tasks[i].isGenericFileHandler) {
-        return tasks[i];
-      }
-    }
-    return null;
+    return FileTasks.getDefaultTask(tasks);
   });
 
   return Promise.all([tasksPromise, defaultTaskPromise]).then(
@@ -720,7 +708,7 @@ FileTasks.prototype.display = function(combobutton) {
   } else {
     combobutton.defaultItem = {
       type: FileTasks.TaskMenuButtonItemType.ShowMenu,
-      label: str('OPEN_WITH_BUTTON_LABEL')
+      label: str('MORE_ACTIONS_BUTTON_LABEL')
     };
   }
 
@@ -803,7 +791,7 @@ FileTasks.prototype.createCombobuttonItem_ = function(task, opt_title,
                                                       opt_isDefault) {
   return {
     type: FileTasks.TaskMenuButtonItemType.RunTask,
-    label: opt_title || task.title,
+    label: (opt_title || task.title),
     iconUrl: task.iconUrl,
     iconType: task.iconType,
     task: task,
@@ -846,3 +834,31 @@ FileTasks.prototype.showTaskPicker = function(taskDialog, title, message,
         onSuccess(item.task);
       });
 };
+
+/**
+ * Gets the default task from tasks. In case there is no such task (i.e. all
+ * tasks are generic file handlers), then return opt_taskToUseIfNoDefault or
+ * null.
+ *
+ * @param {!Array<!Object>} tasks The list of tasks from where to choose the
+ *     default task.
+ * @param {!Object=} opt_taskToUseIfNoDefault The task to return in case there
+ *     is no default task available in tasks.
+ * @return {Object} opt_taskToUseIfNoDefault or null in case
+ *     opt_taskToUseIfNoDefault is undefined.
+ */
+FileTasks.getDefaultTask = function(tasks, opt_taskToUseIfNoDefault) {
+  for (var i = 0; i < tasks.length; i++) {
+    if (tasks[i].isDefault) {
+      return tasks[i];
+    }
+  }
+  // If we haven't picked a default task yet, then just pick the first one
+  // which is not generic file handler.
+  for (var i = 0; i < tasks.length; i++) {
+    if (!tasks[i].isGenericFileHandler) {
+      return tasks[i];
+    }
+  }
+  return !!opt_taskToUseIfNoDefault ? opt_taskToUseIfNoDefault : null;
+};