Sync csd.proto with server-side version.

chrome/browser/extensions/api/downloads/downloads_api.cc

Index: chrome/browser/extensions/api/downloads/downloads_api.cc
diff --git a/chrome/browser/extensions/api/downloads/downloads_api.cc b/chrome/browser/extensions/api/downloads/downloads_api.cc
index c29ee9336d3ccbf7d39c2bf47df687bee8559d83..7308faf9d253a9a95cd733dd680d3211aab27fa8 100644
--- a/chrome/browser/extensions/api/downloads/downloads_api.cc
+++ b/chrome/browser/extensions/api/downloads/downloads_api.cc
@@ -94,6 +94,7 @@ const char kDangerKey[] = "danger";
 const char kDangerSafe[] = "safe";
 const char kDangerUncommon[] = "uncommon";
 const char kDangerAccepted[] = "accepted";
+const char kDangerHost[] = "host";
 const char kDangerUrl[] = "url";
 const char kEndTimeKey[] = "endTime";
 const char kEndedAfterKey[] = "endedAfter";
@@ -131,6 +132,7 @@ const char* kDangerStrings[] = {
   kDangerSafe,
   kDangerUncommon,
   kDangerAccepted,
+  kDangerHost,
 };
 COMPILE_ASSERT(arraysize(kDangerStrings) == content::DOWNLOAD_DANGER_TYPE_MAX,
                download_danger_type_enum_changed);