[downloads] Move platform specific code out of DownloadTargetDeterminer.

content/browser/download/download_item_impl.h

Index: content/browser/download/download_item_impl.h
diff --git a/content/browser/download/download_item_impl.h b/content/browser/download/download_item_impl.h
index 86f9f43220a94c243d22459f02d7ab7e20e46f99..8e138b120addaf610416d76aa56a761083eca801 100644
--- a/content/browser/download/download_item_impl.h
+++ b/content/browser/download/download_item_impl.h
@@ -9,6 +9,7 @@
 
 #include <memory>
 #include <string>
+#include <vector>
 
 #include "base/callback_forward.h"
 #include "base/files/file_path.h"
@@ -423,11 +424,14 @@ class CONTENT_EXPORT DownloadItemImpl
       const base::FilePath& target_path,
       TargetDisposition disposition,
       DownloadDangerType danger_type,
-      const base::FilePath& intermediate_path);
+      const base::FilePath& intermediate_path,
+      DownloadInterruptReason interrupt_reason);
 
   void OnDownloadRenamedToIntermediateName(
       DownloadInterruptReason reason, const base::FilePath& full_path);
 
+  void OnTargetResolved();
+
   // If all pre-requisites have been met, complete download processing, i.e. do
   // internal cleanup, file rename, and potentially auto-open.  (Dangerous
   // downloads still may block on user acceptance after this point.)
@@ -632,10 +636,11 @@ class CONTENT_EXPORT DownloadItemImpl
   // Did the delegate delay calling Complete on this download?
   bool delegate_delayed_complete_ = false;
 
-  // Error return from DestinationError.  Stored separately from
-  // last_reason_ so that we can avoid handling destination errors until
-  // after file name determination has occurred.
-  DownloadInterruptReason destination_error_ = DOWNLOAD_INTERRUPT_REASON_NONE;
+  // Error return from DestinationError or received at Start().  Stored
+  // separately from last_reason_ so that we can avoid handling destination
+  // errors until after file name determination has occurred.
+  DownloadInterruptReason deferred_interrupt_reason_ =
+      DOWNLOAD_INTERRUPT_REASON_NONE;
 
   // The following fields describe the current state of the download file.