ResourceHandler::OnWillStart: Remove min_size argument.

content/browser/download/download_resource_handler.h

Index: content/browser/download/download_resource_handler.h
diff --git a/content/browser/download/download_resource_handler.h b/content/browser/download/download_resource_handler.h
index 360770a9193eee713f54b2cb690304bcff027881..0847f75e8077da03de6404f1684acc50c86e14b2 100644
--- a/content/browser/download/download_resource_handler.h
+++ b/content/browser/download/download_resource_handler.h
@@ -67,8 +67,7 @@ class CONTENT_EXPORT DownloadResourceHandler
   // Create a new buffer, which will be handed to the download thread for file
   // writing and deletion.
   bool OnWillRead(scoped_refptr<net::IOBuffer>* buf,
-                  int* buf_size,
-                  int min_size) override;
+                  int* buf_size) override;
 
   void OnReadCompleted(int bytes_read,
                        std::unique_ptr<ResourceController> controller) override;