Files.app auto pop up for MTP storage.

chrome/browser/chromeos/file_manager/file_browser_handlers.cc

 // Copyright (c) 2012 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/chromeos/file_manager/file_browser_handlers.h"
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/i18n/case_conversion.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 197 matching lines @@
   scoped_ptr<FileDefinitionList> file_definition_list(new FileDefinitionList);
   for (size_t i = 0; i < file_urls.size(); ++i) {
     const FileSystemURL& url = file_urls[i];
 
     // Check if this file system entry exists first.
     base::File::Info file_info;
 
     base::FilePath local_path = url.path();
     base::FilePath virtual_path = url.virtual_path();
 
-    bool is_drive_file = url.type() == fileapi::kFileSystemTypeDrive;
+    const bool is_drive_file = url.type() == fileapi::kFileSystemTypeDrive;
     DCHECK(!is_drive_file || drive::util::IsUnderDriveMountPoint(local_path));
 
-    // If the file is under drive mount point, there is no actual file to be
-    // found on the url.path().
-    if (!is_drive_file) {
+    const bool is_native_file =
+        url.type() == fileapi::kFileSystemTypeNativeLocal ||
+        url.type() == fileapi::kFileSystemTypeRestrictedNativeLocal;
+
+    // If the file is from a physical volume, actual file must be found.
+    if (is_native_file) {
       if (!base::PathExists(local_path) ||
           base::IsLink(local_path) ||
           !base::GetFileInfo(local_path, &file_info)) {
         continue;
       }
     }
 
     // Grant access to this particular file to target extension. This will
     // ensure that the target extension can access only this FS entry and
     // prevent from traversing FS hierarchy upward.
@@ skipping 290 matching lines @@
       if (common_handlers.empty())
         return FileBrowserHandlerList();
     }
   }
 
   return common_handlers;
 }
 
 }  // namespace file_browser_handlers
 }  // namespace file_manager