(WIP) Use generator to generate externs for chrome.fileManagerPrivate API.

third_party/closure_compiler/externs/chrome_extensions.js

Index: third_party/closure_compiler/externs/chrome_extensions.js
diff --git a/third_party/closure_compiler/externs/chrome_extensions.js b/third_party/closure_compiler/externs/chrome_extensions.js
index 1c4e6f111f5779a51bc9a236c74acffbeea9a294..a171e3ce99e92554e623adf7a186f47f139e6c08 100644
--- a/third_party/closure_compiler/externs/chrome_extensions.js
+++ b/third_party/closure_compiler/externs/chrome_extensions.js
@@ -10640,3 +10640,638 @@ chrome.downloads.DeterminingFilenameEvent.prototype.hasListeners =
  * https://developer.chrome.com/extensions/downloads#event-onDeterminingFilename
  */
 chrome.downloads.onDeterminingFilename;
+
+
+/**
+ * @const
+ */
+chrome.fileSystemProvider = {};

[fukino, 2017/01/18 03:01:37]

Adding chrome.fileSystemPrivider API needs to be done in upstream extern file
first.

+
+/**
+ * @enum {string}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#type-ProviderError
+ */
+chrome.fileSystemProvider.ProviderError = {
+  OK: 'OK',
+  FAILED: 'FAILED',
+  IN_USE: 'IN_USE',
+  EXISTS: 'EXISTS',
+  NOT_FOUND: 'NOT_FOUND',
+  ACCESS_DENIED: 'ACCESS_DENIED',
+  TOO_MANY_OPENED: 'TOO_MANY_OPENED',
+  NO_MEMORY: 'NO_MEMORY',
+  NO_SPACE: 'NO_SPACE',
+  NOT_A_DIRECTORY: 'NOT_A_DIRECTORY',
+  INVALID_OPERATION: 'INVALID_OPERATION',
+  SECURITY: 'SECURITY',
+  ABORT: 'ABORT',
+  NOT_A_FILE: 'NOT_A_FILE',
+  NOT_EMPTY: 'NOT_EMPTY',
+  INVALID_URL: 'INVALID_URL',
+  IO: 'IO',
+};
+
+/**
+ * @enum {string}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#type-OpenFileMode
+ */
+chrome.fileSystemProvider.OpenFileMode = {
+  READ: 'READ',
+  WRITE: 'WRITE',
+};
+
+/**
+ * @enum {string}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#type-ChangeType
+ */
+chrome.fileSystemProvider.ChangeType = {
+  CHANGED: 'CHANGED',
+  DELETED: 'DELETED',
+};
+
+/**
+ * @enum {string}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#type-CommonActionId
+ */
+chrome.fileSystemProvider.CommonActionId = {
+  SAVE_FOR_OFFLINE: 'SAVE_FOR_OFFLINE',
+  OFFLINE_NOT_NECESSARY: 'OFFLINE_NOT_NECESSARY',
+  SHARE: 'SHARE',
+};
+
+/**
+ * @typedef {{
+ *   isDirectory: (boolean|undefined),
+ *   name: (string|undefined),
+ *   size: (number|undefined),
+ *   modificationTime: (Object|undefined),
+ *   mimeType: (string|undefined),
+ *   thumbnail: (string|undefined)
+ * }}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#type-EntryMetadata
+ */
+chrome.fileSystemProvider.EntryMetadata;
+
+/**
+ * @typedef {{
+ *   entryPath: string,
+ *   recursive: boolean,
+ *   lastTag: (string|undefined)
+ * }}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#type-Watcher
+ */
+chrome.fileSystemProvider.Watcher;
+
+/**
+ * @typedef {{
+ *   openRequestId: number,
+ *   filePath: string,
+ *   mode: !chrome.fileSystemProvider.OpenFileMode
+ * }}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#type-OpenedFile
+ */
+chrome.fileSystemProvider.OpenedFile;
+
+/**
+ * @typedef {{
+ *   fileSystemId: string,
+ *   displayName: string,
+ *   writable: boolean,
+ *   openedFilesLimit: number,
+ *   openedFiles: !Array<!chrome.fileSystemProvider.OpenedFile>,
+ *   supportsNotifyTag: (boolean|undefined),
+ *   watchers: !Array<!chrome.fileSystemProvider.Watcher>
+ * }}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#type-FileSystemInfo
+ */
+chrome.fileSystemProvider.FileSystemInfo;
+
+/**
+ * @typedef {{
+ *   fileSystemId: string,
+ *   displayName: string,
+ *   writable: (boolean|undefined),
+ *   openedFilesLimit: (number|undefined),
+ *   supportsNotifyTag: (boolean|undefined)
+ * }}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#type-MountOptions
+ */
+chrome.fileSystemProvider.MountOptions;
+
+/**
+ * @typedef {{
+ *   fileSystemId: string
+ * }}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#type-UnmountOptions
+ */
+chrome.fileSystemProvider.UnmountOptions;
+
+/**
+ * @typedef {{
+ *   fileSystemId: string,
+ *   requestId: number
+ * }}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#type-UnmountRequestedOptions
+ */
+chrome.fileSystemProvider.UnmountRequestedOptions;
+
+/**
+ * @typedef {{
+ *   fileSystemId: string,
+ *   requestId: number,
+ *   entryPath: string,
+ *   isDirectory: boolean,
+ *   name: boolean,
+ *   size: boolean,
+ *   modificationTime: boolean,
+ *   mimeType: boolean,
+ *   thumbnail: boolean
+ * }}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#type-GetMetadataRequestedOptions
+ */
+chrome.fileSystemProvider.GetMetadataRequestedOptions;
+
+/**
+ * @typedef {{
+ *   fileSystemId: string,
+ *   requestId: number,
+ *   entryPaths: !Array<string>
+ * }}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#type-GetActionsRequestedOptions
+ */
+chrome.fileSystemProvider.GetActionsRequestedOptions;
+
+/**
+ * @typedef {{
+ *   fileSystemId: string,
+ *   requestId: number,
+ *   directoryPath: string,
+ *   isDirectory: boolean,
+ *   name: boolean,
+ *   size: boolean,
+ *   modificationTime: boolean,
+ *   mimeType: boolean,
+ *   thumbnail: boolean
+ * }}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#type-ReadDirectoryRequestedOptions
+ */
+chrome.fileSystemProvider.ReadDirectoryRequestedOptions;
+
+/**
+ * @typedef {{
+ *   fileSystemId: string,
+ *   requestId: number,
+ *   filePath: string,
+ *   mode: !chrome.fileSystemProvider.OpenFileMode
+ * }}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#type-OpenFileRequestedOptions
+ */
+chrome.fileSystemProvider.OpenFileRequestedOptions;
+
+/**
+ * @typedef {{
+ *   fileSystemId: string,
+ *   requestId: number,
+ *   openRequestId: number
+ * }}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#type-CloseFileRequestedOptions
+ */
+chrome.fileSystemProvider.CloseFileRequestedOptions;
+
+/**
+ * @typedef {{
+ *   fileSystemId: string,
+ *   requestId: number,
+ *   openRequestId: number,
+ *   offset: number,
+ *   length: number
+ * }}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#type-ReadFileRequestedOptions
+ */
+chrome.fileSystemProvider.ReadFileRequestedOptions;
+
+/**
+ * @typedef {{
+ *   fileSystemId: string,
+ *   requestId: number,
+ *   directoryPath: string,
+ *   recursive: boolean
+ * }}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#type-CreateDirectoryRequestedOptions
+ */
+chrome.fileSystemProvider.CreateDirectoryRequestedOptions;
+
+/**
+ * @typedef {{
+ *   fileSystemId: string,
+ *   requestId: number,
+ *   entryPath: string,
+ *   recursive: boolean
+ * }}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#type-DeleteEntryRequestedOptions
+ */
+chrome.fileSystemProvider.DeleteEntryRequestedOptions;
+
+/**
+ * @typedef {{
+ *   fileSystemId: string,
+ *   requestId: number,
+ *   filePath: string
+ * }}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#type-CreateFileRequestedOptions
+ */
+chrome.fileSystemProvider.CreateFileRequestedOptions;
+
+/**
+ * @typedef {{
+ *   fileSystemId: string,
+ *   requestId: number,
+ *   sourcePath: string,
+ *   targetPath: string
+ * }}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#type-CopyEntryRequestedOptions
+ */
+chrome.fileSystemProvider.CopyEntryRequestedOptions;
+
+/**
+ * @typedef {{
+ *   fileSystemId: string,
+ *   requestId: number,
+ *   sourcePath: string,
+ *   targetPath: string
+ * }}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#type-MoveEntryRequestedOptions
+ */
+chrome.fileSystemProvider.MoveEntryRequestedOptions;
+
+/**
+ * @typedef {{
+ *   fileSystemId: string,
+ *   requestId: number,
+ *   filePath: string,
+ *   length: number
+ * }}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#type-TruncateRequestedOptions
+ */
+chrome.fileSystemProvider.TruncateRequestedOptions;
+
+/**
+ * @typedef {{
+ *   fileSystemId: string,
+ *   requestId: number,
+ *   openRequestId: number,
+ *   offset: number,
+ *   data: ArrayBuffer
+ * }}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#type-WriteFileRequestedOptions
+ */
+chrome.fileSystemProvider.WriteFileRequestedOptions;
+
+/**
+ * @typedef {{
+ *   fileSystemId: string,
+ *   requestId: number,
+ *   operationRequestId: number
+ * }}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#type-AbortRequestedOptions
+ */
+chrome.fileSystemProvider.AbortRequestedOptions;
+
+/**
+ * @typedef {{
+ *   fileSystemId: string,
+ *   requestId: number,
+ *   entryPath: string,
+ *   recursive: boolean
+ * }}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#type-AddWatcherRequestedOptions
+ */
+chrome.fileSystemProvider.AddWatcherRequestedOptions;
+
+/**
+ * @typedef {{
+ *   fileSystemId: string,
+ *   requestId: number,
+ *   entryPath: string,
+ *   recursive: boolean
+ * }}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#type-RemoveWatcherRequestedOptions
+ */
+chrome.fileSystemProvider.RemoveWatcherRequestedOptions;
+
+/**
+ * @typedef {{
+ *   id: string,
+ *   title: (string|undefined)
+ * }}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#type-Action
+ */
+chrome.fileSystemProvider.Action;
+
+/**
+ * @typedef {{
+ *   fileSystemId: string,
+ *   requestId: number,
+ *   entryPaths: !Array<string>,
+ *   actionId: string
+ * }}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#type-ExecuteActionRequestedOptions
+ */
+chrome.fileSystemProvider.ExecuteActionRequestedOptions;
+
+/**
+ * @typedef {{
+ *   entryPath: string,
+ *   changeType: !chrome.fileSystemProvider.ChangeType
+ * }}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#type-Change
+ */
+chrome.fileSystemProvider.Change;
+
+/**
+ * @typedef {{
+ *   fileSystemId: string,
+ *   observedPath: string,
+ *   recursive: boolean,
+ *   changeType: !chrome.fileSystemProvider.ChangeType,
+ *   changes: (!Array<!chrome.fileSystemProvider.Change>|undefined),
+ *   tag: (string|undefined)
+ * }}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#type-NotifyOptions
+ */
+chrome.fileSystemProvider.NotifyOptions;
+
+/**
+ * @typedef {{
+ *   fileSystemId: string,
+ *   requestId: number
+ * }}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#type-ConfigureRequestedOptions
+ */
+chrome.fileSystemProvider.ConfigureRequestedOptions;
+
+/**
+ * <p>Mounts a file system with the given <code>fileSystemId</code> and
+ * <code>displayName</code>. <code>displayName</code> will be shown in the left
+ * panel of Files.app. <code>displayName</code> can contain any characters
+ * including '/', but cannot be an empty string. <code>displayName</code> must
+ * be descriptive but doesn't have to be unique. The <code>fileSystemId</code>
+ * must not be an empty string.</p><p>Depending on the type of the file system
+ * being mounted, the <code>source</code> option must be set
+ * appropriately.</p><p>In case of an error, $(ref:runtime.lastError) will be
+ * set with a corresponding error code.</p>
+ * @param {!chrome.fileSystemProvider.MountOptions} options
+ * @param {function():void=} callback A generic result callback to indicate
+ *     success or failure.
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#method-mount
+ */
+chrome.fileSystemProvider.mount = function(options, callback) {};
+
+/**
+ * <p>Unmounts a file system with the given <code>fileSystemId</code>. It must
+ * be called after $(ref:onUnmountRequested) is invoked. Also, the providing
+ * extension can decide to perform unmounting if not requested (eg. in case of
+ * lost connection, or a file error).</p><p>In case of an error,
+ * $(ref:runtime.lastError) will be set with a corresponding error code.</p>
+ * @param {!chrome.fileSystemProvider.UnmountOptions} options
+ * @param {function():void=} callback A generic result callback to indicate
+ *     success or failure.
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#method-unmount
+ */
+chrome.fileSystemProvider.unmount = function(options, callback) {};
+
+/**
+ * Returns all file systems mounted by the extension.
+ * @param {function(!Array<!chrome.fileSystemProvider.FileSystemInfo>):void}
+ *     callback Callback to receive the result of $(ref:getAll) function.
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#method-getAll
+ */
+chrome.fileSystemProvider.getAll = function(callback) {};
+
+/**
+ * Returns information about a file system with the passed
+ * <code>fileSystemId</code>.
+ * @param {string} fileSystemId
+ * @param {function(!chrome.fileSystemProvider.FileSystemInfo):void} callback
+ *     Callback to receive the result of $(ref:get) function.
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#method-get
+ */
+chrome.fileSystemProvider.get = function(fileSystemId, callback) {};
+
+/**
+ * <p>Notifies about changes in the watched directory at
+ * <code>observedPath</code> in <code>recursive</code> mode. If the file system
+ * is mounted with <code>supportsNofityTag</code>, then <code>tag</code> must be
+ * provided, and all changes since the last notification always reported, even
+ * if the system was shutdown. The last tag can be obtained with
+ * $(ref:getAll).</p><p>To use, the <code>file_system_provider.notify</code>
+ * manifest option must be set to true.</p><p>Value of <code>tag</code> can be
+ * any string which is unique per call, so it's possible to identify the last
+ * registered notification. Eg. if the providing extension starts after a
+ * reboot, and the last registered notification's tag is equal to "123", then it
+ * should call $(ref:notify) for all changes which happened since the change
+ * tagged as "123". It cannot be an empty string.</p><p>Not all providers are
+ * able to provide a tag, but if the file system has a changelog, then the tag
+ * can be eg. a change number, or a revision number.</p><p>Note that if a parent
+ * directory is removed, then all descendant entries are also removed, and if
+ * they are watched, then the API must be notified about the fact. Also, if a
+ * directory is renamed, then all descendant entries are in fact removed, as
+ * there is no entry under their original paths anymore.</p><p>In case of an
+ * error, $(ref:runtime.lastError) will be set will a corresponding error
+ * code.</p>
+ * @param {!chrome.fileSystemProvider.NotifyOptions} options
+ * @param {function():void=} callback A generic result callback to indicate
+ *     success or failure.
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#method-notify
+ */
+chrome.fileSystemProvider.notify = function(options, callback) {};
+
+/**
+ * Raised when unmounting for the file system with the <code>fileSystemId</code>
+ * identifier is requested. In the response, the $(ref:unmount) API method must
+ * be called together with <code>successCallback</code>. If unmounting is not
+ * possible (eg. due to a pending operation), then <code>errorCallback</code>
+ * must be called.
+ * @type {!ChromeEvent}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#event-onUnmountRequested
+ */
+chrome.fileSystemProvider.onUnmountRequested;
+
+/**
+ * Raised when metadata of a file or a directory at <code>entryPath</code> is
+ * requested. The metadata must be returned with the
+ * <code>successCallback</code> call. In case of an error,
+ * <code>errorCallback</code> must be called.
+ * @type {!ChromeEvent}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#event-onGetMetadataRequested
+ */
+chrome.fileSystemProvider.onGetMetadataRequested;
+
+/**
+ * Raised when a list of actions for a set of files or directories at
+ * <code>entryPaths</code> is requested. All of the returned actions must be
+ * applicable to each entry. If there are no such actions, an empty array should
+ * be returned. The actions must be returned with the
+ * <code>successCallback</code> call. In case of an error,
+ * <code>errorCallback</code> must be called.
+ * @type {!ChromeEvent}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#event-onGetActionsRequested
+ */
+chrome.fileSystemProvider.onGetActionsRequested;
+
+/**
+ * Raised when contents of a directory at <code>directoryPath</code> are
+ * requested. The results must be returned in chunks by calling the
+ * <code>successCallback</code> several times. In case of an error,
+ * <code>errorCallback</code> must be called.
+ * @type {!ChromeEvent}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#event-onReadDirectoryRequested
+ */
+chrome.fileSystemProvider.onReadDirectoryRequested;
+
+/**
+ * Raised when opening a file at <code>filePath</code> is requested. If the file
+ * does not exist, then the operation must fail. Maximum number of files opened
+ * at once can be specified with <code>MountOptions</code>.
+ * @type {!ChromeEvent}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#event-onOpenFileRequested
+ */
+chrome.fileSystemProvider.onOpenFileRequested;
+
+/**
+ * Raised when opening a file previously opened with <code>openRequestId</code>
+ * is requested to be closed.
+ * @type {!ChromeEvent}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#event-onCloseFileRequested
+ */
+chrome.fileSystemProvider.onCloseFileRequested;
+
+/**
+ * Raised when reading contents of a file opened previously with
+ * <code>openRequestId</code> is requested. The results must be returned in
+ * chunks by calling <code>successCallback</code> several times. In case of an
+ * error, <code>errorCallback</code> must be called.
+ * @type {!ChromeEvent}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#event-onReadFileRequested
+ */
+chrome.fileSystemProvider.onReadFileRequested;
+
+/**
+ * Raised when creating a directory is requested. The operation must fail with
+ * the EXISTS error if the target directory already exists. If
+ * <code>recursive</code> is true, then all of the missing directories on the
+ * directory path must be created.
+ * @type {!ChromeEvent}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#event-onCreateDirectoryRequested
+ */
+chrome.fileSystemProvider.onCreateDirectoryRequested;
+
+/**
+ * Raised when deleting an entry is requested. If <code>recursive</code> is
+ * true, and the entry is a directory, then all of the entries inside must be
+ * recursively deleted as well.
+ * @type {!ChromeEvent}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#event-onDeleteEntryRequested
+ */
+chrome.fileSystemProvider.onDeleteEntryRequested;
+
+/**
+ * Raised when creating a file is requested. If the file already exists, then
+ * <code>errorCallback</code> must be called with the <code>"EXISTS"</code>
+ * error code.
+ * @type {!ChromeEvent}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#event-onCreateFileRequested
+ */
+chrome.fileSystemProvider.onCreateFileRequested;
+
+/**
+ * Raised when copying an entry (recursively if a directory) is requested. If an
+ * error occurs, then <code>errorCallback</code> must be called.
+ * @type {!ChromeEvent}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#event-onCopyEntryRequested
+ */
+chrome.fileSystemProvider.onCopyEntryRequested;
+
+/**
+ * Raised when moving an entry (recursively if a directory) is requested. If an
+ * error occurs, then <code>errorCallback</code> must be called.
+ * @type {!ChromeEvent}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#event-onMoveEntryRequested
+ */
+chrome.fileSystemProvider.onMoveEntryRequested;
+
+/**
+ * Raised when truncating a file to a desired length is requested. If an error
+ * occurs, then <code>errorCallback</code> must be called.
+ * @type {!ChromeEvent}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#event-onTruncateRequested
+ */
+chrome.fileSystemProvider.onTruncateRequested;
+
+/**
+ * Raised when writing contents to a file opened previously with
+ * <code>openRequestId</code> is requested.
+ * @type {!ChromeEvent}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#event-onWriteFileRequested
+ */
+chrome.fileSystemProvider.onWriteFileRequested;
+
+/**
+ * Raised when aborting an operation with <code>operationRequestId</code> is
+ * requested. The operation executed with <code>operationRequestId</code> must
+ * be immediately stopped and <code>successCallback</code> of this abort request
+ * executed. If aborting fails, then <code>errorCallback</code> must be called.
+ * Note, that callbacks of the aborted operation must not be called, as they
+ * will be ignored. Despite calling <code>errorCallback</code>, the request may
+ * be forcibly aborted.
+ * @type {!ChromeEvent}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#event-onAbortRequested
+ */
+chrome.fileSystemProvider.onAbortRequested;
+
+/**
+ * Raised when showing a configuration dialog for <code>fileSystemId</code> is
+ * requested. If it's handled, the
+ * <code>file_system_provider.configurable</code> manfiest option must be set to
+ * true.
+ * @type {!ChromeEvent}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#event-onConfigureRequested
+ */
+chrome.fileSystemProvider.onConfigureRequested;
+
+/**
+ * Raised when showing a dialog for mounting a new file system is requested. If
+ * the extension/app is a file handler, then this event shouldn't be handled.
+ * Instead <code>app.runtime.onLaunched</code> should be handled in order to
+ * mount new file systems when a file is opened. For multiple mounts, the
+ * <code>file_system_provider.multiple_mounts</code> manifest option must be set
+ * to true.
+ * @type {!ChromeEvent}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#event-onMountRequested
+ */
+chrome.fileSystemProvider.onMountRequested;
+
+/**
+ * Raised when setting a new directory watcher is requested. If an error occurs,
+ * then <code>errorCallback</code> must be called.
+ * @type {!ChromeEvent}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#event-onAddWatcherRequested
+ */
+chrome.fileSystemProvider.onAddWatcherRequested;
+
+/**
+ * Raised when the watcher should be removed. If an error occurs, then
+ * <code>errorCallback</code> must be called.
+ * @type {!ChromeEvent}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#event-onRemoveWatcherRequested
+ */
+chrome.fileSystemProvider.onRemoveWatcherRequested;
+
+/**
+ * Raised when executing an action for a set of files or directories is\
+ * requested. After the action is completed, <code>successCallback</code> must
+ * be called. On error, <code>errorCallback</code> must be called.
+ * @type {!ChromeEvent}
+ * @see https://developer.chrome.com/extensions/fileSystemProvider#event-onExecuteActionRequested
+ */
+chrome.fileSystemProvider.onExecuteActionRequested;