move file access permission logic to DownloadResourceThrottle

chrome/browser/download/download_target_determiner.h

Index: chrome/browser/download/download_target_determiner.h
diff --git a/chrome/browser/download/download_target_determiner.h b/chrome/browser/download/download_target_determiner.h
index 46f17a778141fef5b825339ec48db7da1e1c61e5..0bb4cb034e297f6e0540ce9aee9d75502a64efe0 100644
--- a/chrome/browser/download/download_target_determiner.h
+++ b/chrome/browser/download/download_target_determiner.h
@@ -93,7 +93,6 @@ class DownloadTargetDeterminer
   // Result indicating how the workflow should proceed. The loop ends when a
   // handler returns COMPLETE.
   enum State {
-    STATE_PROMPT_USER_FOR_PERMISSION,
     STATE_GENERATE_TARGET_PATH,
     STATE_NOTIFY_EXTENSIONS,
     STATE_RESERVE_VIRTUAL_PATH,
@@ -149,17 +148,6 @@ class DownloadTargetDeterminer
 
   // === Main workflow ===
 
-  // Prompts user for file access if necessary.
-  // Next state:
-  // - STATE_GENERATE_TARGET_PATH.
-  Result DoPromptUserForPermission();
-
-#if defined(OS_ANDROID)
-  // Callback invoked after the file access prompt completes. Cancels the
-  // download if the user doesn't grant file access.
-  void PromptUserForPermissionDone(bool granted);
-#endif
-
   // Generates an initial target path. This target is based only on the state of
   // the download item.
   // Next state: