Add support for actions for multiple file selection.

chrome/common/extensions/api/file_manager_private.idl

Index: chrome/common/extensions/api/file_manager_private.idl
diff --git a/chrome/common/extensions/api/file_manager_private.idl b/chrome/common/extensions/api/file_manager_private.idl
index d70a064327712bbfa1745ffe7684f8faa8a94de0..0d3a817c4bd4470ac32b1e0b3c5cdec2b408aeeb 100644
--- a/chrome/common/extensions/api/file_manager_private.idl
+++ b/chrome/common/extensions/api/file_manager_private.idl
@@ -632,7 +632,7 @@ callback ComputeChecksumCallback = void(DOMString checksum);
 callback GetProvidingExtensionsCallback = void(ProvidingExtension[] extensions);
 
 // |actions| List of actions.
-callback GetEntryActionsCallback = void(fileSystemProvider.Action[] actions);
+callback GetCustomActionsCallback = void(fileSystemProvider.Action[] actions);
 
 interface Functions {
   // Logout the current user for navigating to the re-authentication screen for
@@ -941,18 +941,18 @@ interface Functions {
   // an error via chrome.runtime.lastError.
   static void configureVolume(DOMString volumeId, SimpleCallback callback);
 
-  // Requests list of actions for the specified file. If not possible, then an
-  // error via chrome.runtime.lastError is returned.
+  // Requests list of custom actions for the specified entries. If not possible,
+  // then an error via chrome.runtime.lastError is returned.
   [nocompile]
-  static void getEntryActions([instanceof=Entry] object entry,
-                              GetEntryActionsCallback callback);
+  static void getCustomActions([instanceof=Entry] object[] entries,
+                               GetCustomActionsCallback callback);
 
-  // Executes the entry action. If not possible, then an error via
-  // chrome.runtime.lastError is returned.
+  // Executes a custom action for a set of entries. If not possible, then an
+  // error via chrome.runtime.lastError is returned.
   [nocompile]
-  static void executeEntryAction([instanceof=Entry] object entry,
-                                 DOMString actionId,
-                                 SimpleCallback callback);
+  static void executeCustomAction([instanceof=Entry] object[] entries,
+                                  DOMString actionId,
+                                  SimpleCallback callback);
 };
 
 interface Events {