Remove ExtensionFunction::SetResult(T*) overload.

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

Index: chrome/browser/extensions/api/file_system/file_system_api.h
diff --git a/chrome/browser/extensions/api/file_system/file_system_api.h b/chrome/browser/extensions/api/file_system/file_system_api.h
index 5034de818e2f91f2624326a832c38b0a867fe260..75113b61cb858483786ce09852587dcfb34fa5cb 100644
--- a/chrome/browser/extensions/api/file_system/file_system_api.h
+++ b/chrome/browser/extensions/api/file_system/file_system_api.h
@@ -13,6 +13,7 @@
 #include "base/files/file_path.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
+#include "base/values.h"
 #include "build/build_config.h"
 #include "chrome/browser/extensions/chrome_extension_function.h"
 #include "chrome/browser/extensions/chrome_extension_function_details.h"
@@ -170,12 +171,13 @@ class FileSystemEntryFunction : public ChromeAsyncExtensionFunction {
   void RegisterFileSystemsAndSendResponse(
       const std::vector<base::FilePath>& path);
 
-  // Creates a response dictionary and sets it as the response to be sent.
-  void CreateResponse();
+  // Creates a result dictionary.
+  std::unique_ptr<base::DictionaryValue> CreateResult();
 
-  // Adds an entry to the response dictionary.
-  void AddEntryToResponse(const base::FilePath& path,
-                          const std::string& id_override);
+  // Adds an entry to the result dictionary.
+  void AddEntryToResult(const base::FilePath& path,
+                        const std::string& id_override,
+                        base::DictionaryValue* result);
 
   // called on the UI thread if there is a problem checking a writable file.
   void HandleWritableFileError(const base::FilePath& error_path);
@@ -185,9 +187,6 @@ class FileSystemEntryFunction : public ChromeAsyncExtensionFunction {
 
   // Whether a directory has been requested.
   bool is_directory_;
-
-  // The dictionary to send as the response.
-  base::DictionaryValue* response_;
 };
 
 class FileSystemGetWritableEntryFunction : public FileSystemEntryFunction {