Implement safebrowsing download feedback service, enabled for dev & canary only.

chrome/common/chrome_switches.cc

Index: chrome/common/chrome_switches.cc
diff --git a/chrome/common/chrome_switches.cc b/chrome/common/chrome_switches.cc
index 7a878bc051cf9b30003cebd4ee6923c4d0cb1f93..fdcd50d5c22c288d7823a336b1c187f6f8168462 100644
--- a/chrome/common/chrome_switches.cc
+++ b/chrome/common/chrome_switches.cc
@@ -1234,6 +1234,13 @@ const char kSbDisableExtensionBlacklist[] =
 const char kSbDisableSideEffectFreeWhitelist[] =
     "safebrowsing-disable-side-effect-free-whitelist";
 
+// URL to send safebrowsing download feedback reports to.
+const char kSbDownloadFeedbackURL[] = "safebrowsing-download-feedback-url";
+
+// Enable safebrowsing download feedback.
+const char kSbEnableDownloadFeedback[] =
+    "safebrowsing-enable-download-feedback";
+
 // Enables or disables extension scripts badges in the location bar.
 const char kScriptBadges[]                  = "script-badges";