Beginning of support for extension content verification

net/url_request/url_request_file_job.cc

Index: net/url_request/url_request_file_job.cc
diff --git a/net/url_request/url_request_file_job.cc b/net/url_request/url_request_file_job.cc
index 011a0daff23c8dee4617734d3148a05592c8c364..74e61315980c0238c6795ef55acf2e03d86722bf 100644
--- a/net/url_request/url_request_file_job.cc
+++ b/net/url_request/url_request_file_job.cc
@@ -294,19 +294,21 @@ void URLRequestFileJob::DidSeek(int64 result) {
 }
 
 void URLRequestFileJob::DidRead(scoped_refptr<net::IOBuffer> buf, int result) {
-  OnReadComplete(buf.get(), result);
-  buf = NULL;
   if (result > 0) {
     SetStatus(URLRequestStatus());  // Clear the IO_PENDING status
-  } else if (result == 0) {
+    remaining_bytes_ -= result;
+    DCHECK_GE(remaining_bytes_, 0);
+  }
+
+  OnReadComplete(buf.get(), result);
+  buf = NULL;
+
+  if (result == 0) {
     NotifyDone(URLRequestStatus());
-  } else {
+  } else if (result < 0) {
     NotifyDone(URLRequestStatus(URLRequestStatus::FAILED, result));
   }
 
-  remaining_bytes_ -= result;
-  DCHECK_GE(remaining_bytes_, 0);
-
   NotifyReadComplete(result);
 }