Refactor ResourceHandler API.

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 b2820a39a9f1007cc54d3ffb7e3ad59b86d39387..c1a97602c8fb7a1c4d66ddf61ef6fcd01f1b7662 100644
--- a/content/browser/download/download_resource_handler.h
+++ b/content/browser/download/download_resource_handler.h
@@ -49,15 +49,16 @@ class CONTENT_EXPORT DownloadResourceHandler
   // ResourceDispatcherHostImpl.
   static std::unique_ptr<ResourceHandler> Create(net::URLRequest* request);
 
-  bool OnRequestRedirected(const net::RedirectInfo& redirect_info,
+  void OnRequestRedirected(const net::RedirectInfo& redirect_info,
                            ResourceResponse* response,
-                           bool* defer) override;
+                           bool* defer_or_cancel) override;
 
   // Send the download creation information to the download thread.
-  bool OnResponseStarted(ResourceResponse* response, bool* defer) override;
+  void OnResponseStarted(ResourceResponse* response,
+                         bool* defer_or_cancel) override;
 
   // Pass-through implementation.
-  bool OnWillStart(const GURL& url, bool* defer) override;
+  void OnWillStart(const GURL& url, bool* defer_or_cancel) override;
 
   // Create a new buffer, which will be handed to the download thread for file
   // writing and deletion.
@@ -65,7 +66,7 @@ class CONTENT_EXPORT DownloadResourceHandler
                   int* buf_size,
                   int min_size) override;
 
-  bool OnReadCompleted(int bytes_read, bool* defer) override;
+  void OnReadCompleted(int bytes_read, bool* defer_or_cancel) override;
 
   void OnResponseCompleted(const net::URLRequestStatus& status,
                            bool* defer) override;