Rename chrome.fileSystem apis to be expandable to directories if we wish.

chrome/browser/extensions/api/file_system/file_system_api.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_API_FILE_SYSTEM_FILE_SYSTEM_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_FILE_SYSTEM_FILE_SYSTEM_API_H_
 
 #include "chrome/browser/extensions/extension_function.h"
 #include "chrome/common/extensions/api/file_system.h"
 #include "ui/base/dialogs/select_file_dialog.h"
@@ skipping 28 matching lines @@
   // This will finish the choose file process. This is either called directly
   // from FileSelected, or from CreateFileIfNecessary. It is called on the UI
   // thread.
   void RegisterFileSystemAndSendResponse(const FilePath& path,
                                          EntryType entry_type);
 
   // called on the UI thread if there is a problem checking a writable file.
   void HandleWritableFileError();
 };
 
-class FileSystemGetWritableFileEntryFunction : public FileSystemEntryFunction {
+class FileSystemGetWritableEntryFunction : public FileSystemEntryFunction {
  public:
-  DECLARE_EXTENSION_FUNCTION_NAME("fileSystem.getWritableFileEntry");
+  DECLARE_EXTENSION_FUNCTION_NAME("fileSystem.getWritableEntry");
 
  protected:
-  virtual ~FileSystemGetWritableFileEntryFunction() {}
+  virtual ~FileSystemGetWritableEntryFunction() {}
   virtual bool RunImpl() OVERRIDE;
 };
 
-class FileSystemIsWritableFileEntryFunction : public SyncExtensionFunction {
+class FileSystemIsWritableEntryFunction : public SyncExtensionFunction {
  public:
-  DECLARE_EXTENSION_FUNCTION_NAME("fileSystem.isWritableFileEntry");
+  DECLARE_EXTENSION_FUNCTION_NAME("fileSystem.isWritableEntry");
 
  protected:
-  virtual ~FileSystemIsWritableFileEntryFunction() {}
+  virtual ~FileSystemIsWritableEntryFunction() {}
   virtual bool RunImpl() OVERRIDE;
 };
 
-class FileSystemChooseFileFunction : public FileSystemEntryFunction {
+class FileSystemChooseEntryFunction : public FileSystemEntryFunction {
  public:
   // Allow picker UI to be skipped in testing.
   static void SkipPickerAndAlwaysSelectPathForTest(FilePath* path);
   static void SkipPickerAndAlwaysCancelForTest();
   static void StopSkippingPickerForTest();
 
-  DECLARE_EXTENSION_FUNCTION_NAME("fileSystem.chooseFile");
+  DECLARE_EXTENSION_FUNCTION_NAME("fileSystem.chooseEntry");
 
   typedef std::vector<linked_ptr<extensions::api::file_system::AcceptOption> >
       AcceptOptions;
 
   static void BuildFileTypeInfo(
       ui::SelectFileDialog::FileTypeInfo* file_type_info,
       const FilePath::StringType& suggested_extension,
       const AcceptOptions* accepts,
       const bool* acceptsAllTypes);
   static void BuildSuggestion(const std::string* opt_name,
                               FilePath* suggested_name,
                               FilePath::StringType* suggested_extension);
 
  protected:
   class FilePicker;
 
-  virtual ~FileSystemChooseFileFunction() {}
+  virtual ~FileSystemChooseEntryFunction() {}
   virtual bool RunImpl() OVERRIDE;
   bool ShowPicker(const FilePath& suggested_path,
                   const ui::SelectFileDialog::FileTypeInfo& file_type_info,
                   ui::SelectFileDialog::Type picker_type,
                   EntryType entry_type);
 
  private:
   // FileSelected and FileSelectionCanceled are called by the file picker.
   void FileSelected(const FilePath& path, EntryType entry_type);
   void FileSelectionCanceled();
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_FILE_SYSTEM_FILE_SYSTEM_API_H_