Introduce ResourceRequesterInfo to abstract the requester of resource request

content/browser/appcache/appcache_interceptor.cc

Index: content/browser/appcache/appcache_interceptor.cc
diff --git a/content/browser/appcache/appcache_interceptor.cc b/content/browser/appcache/appcache_interceptor.cc
index 85022442562c6f188f524bd50fabdf98e3b33f3b..dba41c5d6b45b81440be3a74e8363eece4380c09 100644
--- a/content/browser/appcache/appcache_interceptor.cc
+++ b/content/browser/appcache/appcache_interceptor.cc
@@ -13,6 +13,7 @@
 #include "content/browser/appcache/chrome_appcache_service.h"
 #include "content/browser/bad_message.h"
 #include "content/browser/loader/resource_message_filter.h"
+#include "content/browser/loader/resource_requester_info.h"
 #include "content/common/appcache_interfaces.h"
 #include "net/url_request/url_request.h"
 
@@ -81,11 +82,13 @@ void AppCacheInterceptor::CompleteCrossSiteTransfer(
     net::URLRequest* request,
     int new_process_id,
     int new_host_id,
-    ResourceMessageFilter* filter) {
+    const ResourceRequesterInfo* requester_info) {
+  // AppCache is supported only for renderer initiated requests.
+  DCHECK(requester_info->IsRenderer());
   AppCacheRequestHandler* handler = GetHandler(request);
   if (!handler)
     return;
-  if (!handler->SanityCheckIsSameService(filter->appcache_service())) {
+  if (!handler->SanityCheckIsSameService(requester_info->appcache_service())) {
     // This can happen when V2 apps and web pages end up in the same storage
     // partition.
     const GURL& first_party_url_for_cookies =
@@ -98,7 +101,7 @@ void AppCacheInterceptor::CompleteCrossSiteTransfer(
       // No need to explicitly call DumpWithoutCrashing(), since
       // bad_message::ReceivedBadMessage() below will do that.
     }
-    bad_message::ReceivedBadMessage(filter,
+    bad_message::ReceivedBadMessage(requester_info->filter(),
                                     bad_message::ACI_WRONG_STORAGE_PARTITION);
     return;
   }