Prerender: Test that prefetch flags are set correctly on redirect.

chrome/browser/prerender/prerender_test_utils.h

Index: chrome/browser/prerender/prerender_test_utils.h
diff --git a/chrome/browser/prerender/prerender_test_utils.h b/chrome/browser/prerender/prerender_test_utils.h
index 741d93f6a6e15531e228165dc03bad8cf607decc..3ea9fe93e08a1312e9aa4a9209b01bca0841d485 100644
--- a/chrome/browser/prerender/prerender_test_utils.h
+++ b/chrome/browser/prerender/prerender_test_utils.h
@@ -375,6 +375,12 @@ void CreateCountingInterceptorOnIO(
     const base::FilePath& file,
     const base::WeakPtr<RequestCounter>& counter);
 
+// Checks that |url| has been requested with prefetch load flags. Pings

[pasko, 2016/11/23 16:47:29]

nit: s/prefetch load flags/LOAD_PREFETCH/

[mattcary, 2016/11/24 08:30:22]

Sure, although in the future if the details of the load flags change, this
comment will have to be changed as well.

+// |counter| after the flag is checked.
+void CreatePrefetchOnlyInterceptorOnIO(
+    const GURL& url,
+    const base::WeakPtr<RequestCounter>& counter);
+
 // Makes |url| respond to requests with the contents of |file|.
 void CreateMockInterceptorOnIO(const GURL& url, const base::FilePath& file);