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
diff --git a/chrome/browser/chromeos/extensions/file_browser_private_api.h b/chrome/browser/chromeos/extensions/file_browser_private_api.h
index 5d69649642c134651e4ad6679625465c3cc79ef8..e25289447324faf03dfe105fe0b15700b80b8d74 100644
--- a/chrome/browser/chromeos/extensions/file_browser_private_api.h
+++ b/chrome/browser/chromeos/extensions/file_browser_private_api.h
@@ -610,4 +610,13 @@ class GetNetworkConnectionStateFunction : public SyncExtensionFunction {
       "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_