[fsp] Add support for reading directories.

chrome/browser/chromeos/extensions/file_system_provider/file_system_provider_api.h

 // Copyright 2013 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_CHROMEOS_EXTENSIONS_FILE_SYSTEM_PROVIDER_FILE_SYSTEM_PROVIDER_API_H_
 #define CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_SYSTEM_PROVIDER_FILE_SYSTEM_PROVIDER_API_H_
 
 #include "chrome/browser/chromeos/extensions/file_system_provider/provider_function.h"
 #include "chrome/browser/extensions/chrome_extension_function.h"
 
@@ skipping 60 matching lines @@
  public:
   DECLARE_EXTENSION_FUNCTION(
       "fileSystemProviderInternal.getMetadataRequestedError",
       FILESYSTEMPROVIDERINTERNAL_GETMETADATAREQUESTEDERROR)
 
  protected:
   virtual ~FileSystemProviderInternalGetMetadataRequestedErrorFunction() {}
   virtual bool RunWhenValid() OVERRIDE;
 };
 
+class FileSystemProviderInternalReadDirectoryRequestedSuccessFunction
+    : public FileSystemProviderInternalFunction {
+ public:
+  DECLARE_EXTENSION_FUNCTION(
+      "fileSystemProviderInternal.readDirectoryRequestedSuccess",
+      FILESYSTEMPROVIDERINTERNAL_READDIRECTORYREQUESTEDSUCCESS)
+
+ protected:
+  virtual ~FileSystemProviderInternalReadDirectoryRequestedSuccessFunction() {}
+  virtual bool RunWhenValid() OVERRIDE;
+};
+
+class FileSystemProviderInternalReadDirectoryRequestedErrorFunction
+    : public FileSystemProviderInternalFunction {
+ public:
+  DECLARE_EXTENSION_FUNCTION(
+      "fileSystemProviderInternal.readDirectoryRequestedError",
+      FILESYSTEMPROVIDERINTERNAL_READDIRECTORYREQUESTEDERROR)
+
+ protected:
+  virtual ~FileSystemProviderInternalReadDirectoryRequestedErrorFunction() {}
+  virtual bool RunWhenValid() OVERRIDE;
+};
+
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_SYSTEM_PROVIDER_FILE_SYSTEM_PROVIDER_API_H_