Send safe browsing ThreatDetails to track download CTR when user tries to recover blocked downloads

chrome/browser/safe_browsing/safe_browsing_service.h

Index: chrome/browser/safe_browsing/safe_browsing_service.h
diff --git a/chrome/browser/safe_browsing/safe_browsing_service.h b/chrome/browser/safe_browsing/safe_browsing_service.h
index 0f9ef893152587a4522fea7464ecdf214c4c22d2..24fa8a710ba64a96e35343112393383b354ab701 100644
--- a/chrome/browser/safe_browsing/safe_browsing_service.h
+++ b/chrome/browser/safe_browsing/safe_browsing_service.h
@@ -169,6 +169,9 @@ class SafeBrowsingService
   scoped_ptr<StateSubscription> RegisterStateCallback(
       const base::Callback<void(void)>& callback);
 
+  // Sends serialized download recovery report to backend.
+  void SendDownloadRecoveryReport(const std::string& report);
+
  protected:
   // Creates the safe browsing service.  Need to initialize before using.
   SafeBrowsingService();
@@ -244,6 +247,8 @@ class SafeBrowsingService
   // starts or stops the service accordingly.
   void RefreshState();
 
+  void OnSendDownloadRecoveryReport(const std::string& report);
+
   // The factory used to instanciate a SafeBrowsingService object.
   // Useful for tests, so they can provide their own implementation of
   // SafeBrowsingService.