Files.app: Stop to use file system URLs having externalfile:// scheme origin internally.

chrome/browser/chromeos/fileapi/external_file_url_util.cc

Index: chrome/browser/chromeos/fileapi/external_file_url_util.cc
diff --git a/chrome/browser/chromeos/fileapi/external_file_url_util.cc b/chrome/browser/chromeos/fileapi/external_file_url_util.cc
index 90b4a0c0db91379f4c302334fb1803c05320007d..61aabc8e41bc7e7c28f2417581276a4c19364c59 100644
--- a/chrome/browser/chromeos/fileapi/external_file_url_util.cc
+++ b/chrome/browser/chromeos/fileapi/external_file_url_util.cc
@@ -24,23 +24,23 @@ using content::BrowserThread;
 
 namespace chromeos {
 
+bool IsExternalFileURLType(storage::FileSystemType type) {
+  return type == storage::kFileSystemTypeDrive ||
+         type == storage::kFileSystemTypeDeviceMediaAsFileStorage ||
+         type == storage::kFileSystemTypeProvided;
+}
+
 GURL FileSystemURLToExternalFileURL(
     const storage::FileSystemURL& file_system_url) {
-  if (file_system_url.mount_type() != storage::kFileSystemTypeExternal)
+  if (file_system_url.mount_type() != storage::kFileSystemTypeExternal ||
+      !IsExternalFileURLType(file_system_url.type())) {
     return GURL();
-
-  switch (file_system_url.type()) {
-    case storage::kFileSystemTypeDrive:
-    case storage::kFileSystemTypeDeviceMediaAsFileStorage:
-    case storage::kFileSystemTypeProvided:
-      return GURL(base::StringPrintf(
-          "%s:%s",
-          chrome::kExternalFileScheme,
-          file_system_url.virtual_path().AsUTF8Unsafe().c_str()));
-
-    default:
-      return GURL();
   }
+
+  return GURL(base::StringPrintf(
+      "%s:%s",
+      chrome::kExternalFileScheme,
+      file_system_url.virtual_path().AsUTF8Unsafe().c_str()));
 }
 
 base::FilePath ExternalFileURLToVirtualPath(const GURL& url) {