Downloads: Added transient flag to download item and download database

content/public/test/mock_download_manager.h

Index: content/public/test/mock_download_manager.h
diff --git a/content/public/test/mock_download_manager.h b/content/public/test/mock_download_manager.h
index 1db318251941a4406d64f0afb213766201e1fe77..72cbf9d735a8c1a127433458f2d2fcc27ea4cff4 100644
--- a/content/public/test/mock_download_manager.h
+++ b/content/public/test/mock_download_manager.h
@@ -53,6 +53,7 @@ class MockDownloadManager : public DownloadManager {
     DownloadInterruptReason interrupt_reason;
     bool opened;
     base::Time last_access_time;
+    bool visible;
     std::vector<DownloadItem::ReceivedSlice> received_slices;
 
     CreateDownloadItemAdapter(
@@ -79,6 +80,7 @@ class MockDownloadManager : public DownloadManager {
         DownloadInterruptReason interrupt_reason,
         bool opened,
         const base::Time& last_access_time,
+        bool visible,
         const std::vector<DownloadItem::ReceivedSlice>& received_slices);
     // Required by clang compiler.
     CreateDownloadItemAdapter(const CreateDownloadItemAdapter& rhs);
@@ -141,6 +143,7 @@ class MockDownloadManager : public DownloadManager {
       DownloadInterruptReason interrupt_reason,
       bool opened,
       const base::Time& last_access_time,
+      bool visible,
       const std::vector<DownloadItem::ReceivedSlice>& received_slices) override;
 
   MOCK_METHOD1(MockCreateDownloadItem,