[FileBrowser] Added DefaultAction dialog to choose default action.

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 4b6a326b0524cce47ad4d25dda33d56780443c6f..a6cd15529f62c5d25e51f2abdc012ed08a62aafe 100644
--- a/chrome/browser/chromeos/extensions/file_browser_private_api.h
+++ b/chrome/browser/chromeos/extensions/file_browser_private_api.h
@@ -116,6 +116,19 @@ class ExecuteTasksFileBrowserFunction : public AsyncExtensionFunction {
   DECLARE_EXTENSION_FUNCTION_NAME("fileBrowserPrivate.executeTask");
 };
 
+// Implements the chrome.fileBrowserPrivate.setDefaultTask method.
+class SetDefaultTaskFileBrowserFunction : public AsyncExtensionFunction {
+ public:
+  SetDefaultTaskFileBrowserFunction();
+  virtual ~SetDefaultTaskFileBrowserFunction();
+
+ protected:
+  // AsyncExtensionFunction overrides.
+  virtual bool RunImpl() OVERRIDE;
+
+  DECLARE_EXTENSION_FUNCTION_NAME("fileBrowserPrivate.setDefaultTask");
+};
+
 // Parent class for the chromium extension APIs for the file dialog.
 class FileBrowserFunction
     : public AsyncExtensionFunction {