Reduce/Remove URLRequest dependencies from AppCacheRequestHandler

content/browser/appcache/appcache_host.h

Index: content/browser/appcache/appcache_host.h
diff --git a/content/browser/appcache/appcache_host.h b/content/browser/appcache/appcache_host.h
index 5a182815f6f1a13d9330a9a177f9988343958623..ef1c51b4dc9a58efa91823255bce61afb9aa8835 100644
--- a/content/browser/appcache/appcache_host.h
+++ b/content/browser/appcache/appcache_host.h
@@ -44,6 +44,7 @@ class AppCache;
 class AppCacheFrontend;
 class AppCacheGroupTest;
 class AppCacheHostTest;
+class AppCacheRequest;
 class AppCacheRequestHandler;
 class AppCacheRequestHandlerTest;
 class AppCacheStorageImplTest;
@@ -116,7 +117,7 @@ class CONTENT_EXPORT AppCacheHost
   // Support for loading resources out of the appcache.
   // May return NULL if the request isn't subject to retrieval from an appache.
   std::unique_ptr<AppCacheRequestHandler> CreateRequestHandler(
-      net::URLRequest* request,
+      AppCacheRequest* request,
       ResourceType resource_type,
       bool should_reset_appcache);