[Downloads] Always call DM::StartDownload() for explicit downloads.

content/browser/download/download_create_info.cc

Index: content/browser/download/download_create_info.cc
diff --git a/content/browser/download/download_create_info.cc b/content/browser/download/download_create_info.cc
index e381fa854bd79491433611918e306ce72cb61ad7..ed66a1f30ce591ea55b8f592f7787480c3c974c1 100644
--- a/content/browser/download/download_create_info.cc
+++ b/content/browser/download/download_create_info.cc
@@ -23,6 +23,7 @@ DownloadCreateInfo::DownloadCreateInfo(const base::Time& start_time,
       has_user_gesture(has_user_gesture),
       transition_type(transition_type),
       save_info(save_info.Pass()),
+      interrupt_reason(DOWNLOAD_INTERRUPT_REASON_NONE),
       request_bound_net_log(bound_net_log) {}
 
 DownloadCreateInfo::DownloadCreateInfo()
@@ -30,7 +31,8 @@ DownloadCreateInfo::DownloadCreateInfo()
       download_id(DownloadItem::kInvalidId),
       has_user_gesture(false),
       transition_type(PAGE_TRANSITION_LINK),
-      save_info(new DownloadSaveInfo()) {
+      save_info(new DownloadSaveInfo()),
+      interrupt_reason(DOWNLOAD_INTERRUPT_REASON_NONE) {
 }
 
 DownloadCreateInfo::~DownloadCreateInfo() {