Refactor ResourceHandler API.

content/browser/loader/throttling_resource_handler.h

Index: content/browser/loader/throttling_resource_handler.h
diff --git a/content/browser/loader/throttling_resource_handler.h b/content/browser/loader/throttling_resource_handler.h
index 434151506ad250837132b7824b8bd5b704f7f59b..5c828e68e4f23309427ad03f074240e2a0b603eb 100644
--- a/content/browser/loader/throttling_resource_handler.h
+++ b/content/browser/loader/throttling_resource_handler.h
@@ -34,11 +34,12 @@ class ThrottlingResourceHandler : public LayeredResourceHandler,
   ~ThrottlingResourceHandler() override;
 
   // LayeredResourceHandler overrides:
-  bool OnRequestRedirected(const net::RedirectInfo& redirect_info,
+  void OnRequestRedirected(const net::RedirectInfo& redirect_info,
                            ResourceResponse* response,
-                           bool* defer) override;
-  bool OnResponseStarted(ResourceResponse* response, bool* defer) override;
-  bool OnWillStart(const GURL& url, bool* defer) override;
+                           bool* defer_or_cancel) override;
+  void OnResponseStarted(ResourceResponse* response,
+                         bool* defer_or_cancel) override;
+  void OnWillStart(const GURL& url, bool* defer_or_cancel) override;
 
   // ResourceController implementation:
   void Cancel() override;