Reduced the lifetime of DownloadCreateInfo.

chrome/browser/download/download_safe_browsing_client.cc

Index: chrome/browser/download/download_safe_browsing_client.cc
diff --git a/chrome/browser/download/download_safe_browsing_client.cc b/chrome/browser/download/download_safe_browsing_client.cc
index 36cf5fb28b436efe9b2337180cdb37a428380c31..26a8321935012450e200b57acdf08413d873e023 100644
--- a/chrome/browser/download/download_safe_browsing_client.cc
+++ b/chrome/browser/download/download_safe_browsing_client.cc
@@ -23,8 +23,7 @@
 DownloadSBClient::DownloadSBClient(int32 download_id,
                                    const std::vector<GURL>& url_chain,
                                    const GURL& referrer_url)
-  : info_(NULL),
-    download_id_(download_id),
+  : download_id_(download_id),
     url_chain_(url_chain),
     referrer_url_(referrer_url) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
@@ -36,22 +35,19 @@ DownloadSBClient::DownloadSBClient(int32 download_id,
 
 DownloadSBClient::~DownloadSBClient() {}
 
-void DownloadSBClient::CheckDownloadUrl(DownloadCreateInfo* info,
-                                        UrlDoneCallback* callback) {
+void DownloadSBClient::CheckDownloadUrl(UrlDoneCallback* callback) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   // It is not allowed to call this method twice.
   CHECK(!url_done_callback_.get() && !hash_done_callback_.get());
   CHECK(callback);
-  CHECK(info);
 
-  info_ = info;
   start_time_ = base::TimeTicks::Now();
   url_done_callback_.reset(callback);
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
       NewRunnableMethod(this,
                         &DownloadSBClient::CheckDownloadUrlOnIOThread,
-                        info->url_chain));
+                        url_chain_));
 }
 
 void DownloadSBClient::CheckDownloadHash(const std::string& hash,
@@ -125,7 +121,7 @@ void DownloadSBClient::SafeBrowsingCheckUrlDone(
   DVLOG(1) << "SafeBrowsingCheckUrlDone with result: " << result;
 
   bool is_dangerous = result != SafeBrowsingService::SAFE;
-  url_done_callback_->Run(info_, is_dangerous);
+  url_done_callback_->Run(download_id_, is_dangerous);
 
   if (sb_service_.get() && sb_service_->download_protection_enabled()) {
     UMA_HISTOGRAM_TIMES("SB2.DownloadUrlCheckDuration",