[downloads] Remove DownloadManager::RemoveAllDownloads.

content/public/browser/download_manager.h

Index: content/public/browser/download_manager.h
diff --git a/content/public/browser/download_manager.h b/content/public/browser/download_manager.h
index a4a5134a9c819f44d0045314d096688716d5b856..4c467923d638b1c8a90e2fc7312a986f56f56dbb 100644
--- a/content/public/browser/download_manager.h
+++ b/content/public/browser/download_manager.h
@@ -116,10 +116,6 @@ class CONTENT_EXPORT DownloadManager : public base::SupportsUserData::Data {
       base::Time remove_begin,
       base::Time remove_end) = 0;
 
-  // Remove all downloads will delete all downloads. The number of downloads
-  // deleted is returned back to the caller.
-  virtual int RemoveAllDownloads() = 0;
-
   // See DownloadUrlParameters for details about controlling the download.
   virtual void DownloadUrl(
       std::unique_ptr<DownloadUrlParameters> parameters) = 0;