[Android] Prompt with infobar on filename conflict

chrome/browser/download/download_target_determiner.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/download/download_target_determiner.h"
 
 #include "base/prefs/pref_service.h"
 #include "base/rand_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/time/time.h"
@@ skipping 192 matching lines @@
     base::FilePath target_directory;
     if (should_prompt_) {
       DCHECK(!download_prefs_->IsDownloadPathManaged());
       // If the user is going to be prompted and the user has been prompted
       // before, then always prefer the last directory that the user selected.
       target_directory = download_prefs_->SaveFilePath();
     } else {
       target_directory = download_prefs_->DownloadPath();
     }
     virtual_path_ = target_directory.Append(generated_filename);
+#if defined(OS_ANDROID)
+    conflict_action_ = DownloadPathReservationTracker::PROMPT;
+#else
     conflict_action_ = DownloadPathReservationTracker::UNIQUIFY;
+#endif
     should_notify_extensions_ = true;
   } else {
     virtual_path_ = download_->GetForcedFilePath();
     // If this is a resumed download which was previously interrupted due to an
     // issue with the forced path, the user is still not prompted. If the path
     // supplied to a programmatic download is invalid, then the caller needs to
     // intervene.
   }
   DCHECK(virtual_path_.IsAbsolute());
   DVLOG(20) << "Generated virtual path: " << virtual_path_.AsUTF8Unsafe();
@@ skipping 662 matching lines @@
     const base::FilePath& suggested_path) {
   return base::FilePath(suggested_path.value() + kCrdownloadSuffix);
 }
 
 #if defined(OS_WIN)
 // static
 bool DownloadTargetDeterminer::IsAdobeReaderUpToDate() {
   return g_is_adobe_reader_up_to_date_;
 }
 #endif