Remove unused fields from //content.

content/browser/appcache/appcache_url_request_job.cc

Index: content/browser/appcache/appcache_url_request_job.cc
diff --git a/content/browser/appcache/appcache_url_request_job.cc b/content/browser/appcache/appcache_url_request_job.cc
index 35728e66de5edb73fabf0e8f48f3768c70802a8b..11d72dd73a3f1f41ff2a14d6cfa95ba66514c884 100644
--- a/content/browser/appcache/appcache_url_request_job.cc
+++ b/content/browser/appcache/appcache_url_request_job.cc
@@ -201,8 +201,8 @@ void AppCacheURLRequestJob::OnCacheLoaded(AppCache* cache, int64_t cache_id) {
   const int64_t kLimit = 500 * 1000;
   handler_source_buffer_ = new net::GrowableIOBuffer();
   handler_source_buffer_->SetCapacity(kLimit);
-  handler_source_reader_.reset(storage_->CreateResponseReader(
-      manifest_url_, group_id_, entry_.response_id()));
+  handler_source_reader_.reset(
+      storage_->CreateResponseReader(manifest_url_, entry_.response_id()));
   handler_source_reader_->ReadData(
       handler_source_buffer_.get(),
       kLimit,
@@ -283,8 +283,8 @@ void AppCacheURLRequestJob::OnResponseInfoLoaded(
   DCHECK(is_delivering_appcache_response());
   if (response_info) {
     info_ = response_info;
-    reader_.reset(storage_->CreateResponseReader(
-        manifest_url_, group_id_, entry_.response_id()));
+    reader_.reset(
+        storage_->CreateResponseReader(manifest_url_, entry_.response_id()));
 
     if (is_range_request())
       SetupRangeResponse();