Add download server IP address to the SafeBrowsing download protection ping.

content/browser/download/download_item_impl.cc

Index: content/browser/download/download_item_impl.cc
diff --git a/content/browser/download/download_item_impl.cc b/content/browser/download/download_item_impl.cc
index 02b5b6446d320767414e642856991a8fe3946c3b..1c3236034f7d023d6e2cd8e25c0eb9a3242bc594 100644
--- a/content/browser/download/download_item_impl.cc
+++ b/content/browser/download/download_item_impl.cc
@@ -177,6 +177,7 @@ DownloadItemImpl::DownloadItemImpl(
       mime_type_(info.mime_type),
       original_mime_type_(info.original_mime_type),
       referrer_charset_(info.referrer_charset),
+      remote_address_(info.remote_address),
       total_bytes_(info.total_bytes),
       received_bytes_(0),
       bytes_per_sec_(0),
@@ -849,6 +850,9 @@ std::string DownloadItemImpl::GetOriginalMimeType() const {
 std::string DownloadItemImpl::GetReferrerCharset() const {
   return referrer_charset_;
 }
+std::string DownloadItemImpl::GetRemoteAddress() const {
+  return remote_address_;
+}
 int64 DownloadItemImpl::GetTotalBytes() const { return total_bytes_; }
 void DownloadItemImpl::SetTotalBytes(int64 total_bytes) {
   total_bytes_ = total_bytes;