Revert 138055 - gdata: Add requestDirectoryRefresh to file_browser_private.

chrome/browser/chromeos/extensions/file_browser_private_api.h

Index: chrome/browser/chromeos/extensions/file_browser_private_api.h
===================================================================
--- chrome/browser/chromeos/extensions/file_browser_private_api.h	(revision 138055)
+++ chrome/browser/chromeos/extensions/file_browser_private_api.h	(working copy)
@@ -610,13 +610,4 @@
       "fileBrowserPrivate.getNetworkConnectionState");
 };
 
-// Implements the chrome.fileBrowserPrivate.requestDirectoryRefresh method.
-class RequestDirectoryRefreshFunction : public SyncExtensionFunction {
- protected:
-  virtual bool RunImpl() OVERRIDE;
- private:
-  DECLARE_EXTENSION_FUNCTION_NAME(
-      "fileBrowserPrivate.requestDirectoryRefresh");
-};
-
 #endif  // CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_BROWSER_PRIVATE_API_H_