[Download] Return DownloadInterruptReason from OnStartedCallback

content/public/browser/download_url_parameters.h

Index: content/public/browser/download_url_parameters.h
diff --git a/content/public/browser/download_url_parameters.h b/content/public/browser/download_url_parameters.h
index b48bc2a2e1561b70d9c2152b663141ee047f196a..729693619bd7384f54923c896a83712f48e2d7e9 100644
--- a/content/public/browser/download_url_parameters.h
+++ b/content/public/browser/download_url_parameters.h
@@ -10,9 +10,9 @@
 
 #include "base/basictypes.h"
 #include "base/callback.h"
+#include "content/public/browser/download_interrupt_reasons.h"
 #include "content/public/browser/download_save_info.h"
 #include "content/public/common/referrer.h"
-#include "net/base/net_errors.h"
 #include "url/gurl.h"
 
 namespace content {
@@ -39,7 +39,8 @@ class WebContents;
 class CONTENT_EXPORT DownloadUrlParameters {
  public:
   // If there is an error, then |item| will be NULL.
-  typedef base::Callback<void(DownloadItem*, net::Error)> OnStartedCallback;
+  typedef base::Callback<void(DownloadItem*, DownloadInterruptReason)>
+      OnStartedCallback;
 
   typedef std::pair<std::string, std::string> RequestHeadersNameValuePair;
   typedef std::vector<RequestHeadersNameValuePair> RequestHeadersType;
@@ -104,8 +105,8 @@ class CONTENT_EXPORT DownloadUrlParameters {
   const OnStartedCallback& callback() const { return callback_; }
   bool content_initiated() const { return content_initiated_; }
   int load_flags() const { return load_flags_; }
-  const std::string& last_modified() { return last_modified_; }
-  const std::string& etag() { return etag_; }
+  const std::string& last_modified() const { return last_modified_; }
+  const std::string& etag() const { return etag_; }
   const std::string& method() const { return method_; }
   const std::string& post_body() const { return post_body_; }
   int64 post_id() const { return post_id_; }