Make downloads_api functions synchronous

chrome/browser/extensions/api/downloads/downloads_api.h

 // Copyright (c) 2012 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_EXTENSIONS_API_DOWNLOADS_DOWNLOADS_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_DOWNLOADS_DOWNLOADS_API_H_
 
 #include <set>
 #include <string>
 
@@ skipping 197 matching lines @@
   void DangerPromptCallback(int download_id,
                             DownloadDangerPrompt::Action action);
 
  private:
   void PromptOrWait(int download_id, int retries);
 
   static OnPromptCreatedCallback* on_prompt_created_;
   DISALLOW_COPY_AND_ASSIGN(DownloadsAcceptDangerFunction);
 };
 
-class DownloadsShowFunction : public ChromeAsyncExtensionFunction {
+class DownloadsShowFunction : public ChromeSyncExtensionFunction {
  public:
   DECLARE_EXTENSION_FUNCTION("downloads.show", DOWNLOADS_SHOW)
   DownloadsShowFunction();
-  bool RunAsync() override;
+  bool RunSync() override;
 
  protected:
   ~DownloadsShowFunction() override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(DownloadsShowFunction);
 };
 
-class DownloadsShowDefaultFolderFunction : public ChromeAsyncExtensionFunction {
+class DownloadsShowDefaultFolderFunction : public ChromeSyncExtensionFunction {
  public:
   DECLARE_EXTENSION_FUNCTION(
       "downloads.showDefaultFolder", DOWNLOADS_SHOWDEFAULTFOLDER)
   DownloadsShowDefaultFolderFunction();
-  bool RunAsync() override;
+  bool RunSync() override;
 
  protected:
   ~DownloadsShowDefaultFolderFunction() override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(DownloadsShowDefaultFolderFunction);
 };
 
 class DownloadsOpenFunction : public ChromeSyncExtensionFunction {
  public:
@@ skipping 15 matching lines @@
   DownloadsSetShelfEnabledFunction();
   bool RunSync() override;
 
  protected:
   ~DownloadsSetShelfEnabledFunction() override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(DownloadsSetShelfEnabledFunction);
 };
 
-class DownloadsDragFunction : public ChromeAsyncExtensionFunction {
+class DownloadsDragFunction : public ChromeSyncExtensionFunction {
  public:
   DECLARE_EXTENSION_FUNCTION("downloads.drag", DOWNLOADS_DRAG)
   DownloadsDragFunction();
-  bool RunAsync() override;
+  bool RunSync() override;
 
  protected:
   ~DownloadsDragFunction() override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(DownloadsDragFunction);
 };
 
 class DownloadsGetFileIconFunction : public ChromeAsyncExtensionFunction {
  public:
@@ skipping 119 matching lines @@
   ScopedObserver<extensions::ExtensionRegistry,
                  extensions::ExtensionRegistryObserver>
       extension_registry_observer_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionDownloadsEventRouter);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_DOWNLOADS_DOWNLOADS_API_H_