Hooked up NetLog to DownloadItem, DownloadFile, and FileStream.

content/browser/download/download_resource_handler.h

Index: content/browser/download/download_resource_handler.h
diff --git a/content/browser/download/download_resource_handler.h b/content/browser/download/download_resource_handler.h
index e6ad33c27987524911cfa352d6e26678afb33bd8..6955f8f2c28b20e8a3c5f02a924b1c9388214de4 100644
--- a/content/browser/download/download_resource_handler.h
+++ b/content/browser/download/download_resource_handler.h
@@ -16,6 +16,7 @@
 #include "content/public/browser/download_id.h"
 #include "content/public/browser/global_request_id.h"
 #include "net/base/net_errors.h"
+#include "net/base/net_log.h"
 
 class DownloadFileManager;
 class DownloadRequestHandle;
@@ -127,6 +128,8 @@ class DownloadResourceHandler : public ResourceHandler {
   int64 bytes_read_;
   std::string accept_ranges_;
 
+  const net::BoundNetLog bound_net_log_;
+
   static const int kReadBufSize = 32768;  // bytes
   static const int kThrottleTimeMs = 200;  // milliseconds