arc: Register ARC content file system

chrome/browser/chromeos/fileapi/file_system_backend.h

Index: chrome/browser/chromeos/fileapi/file_system_backend.h
diff --git a/chrome/browser/chromeos/fileapi/file_system_backend.h b/chrome/browser/chromeos/fileapi/file_system_backend.h
index 9e393c9ff9e73510351463d668b4519cebfa5ef1..31aab4c69d758a3a57512117eba3cc6cd8d77951 100644
--- a/chrome/browser/chromeos/fileapi/file_system_backend.h
+++ b/chrome/browser/chromeos/fileapi/file_system_backend.h
@@ -72,12 +72,12 @@ class FileSystemBackend : public storage::ExternalFileSystemBackend {
   // pointer and it should outlive FileSystemBackend instance.
   // The ownerships of |drive_delegate| and |file_system_provider_delegate| are
   // also taken.
-  FileSystemBackend(
-      FileSystemBackendDelegate* drive_delegate,
-      FileSystemBackendDelegate* file_system_provider_delegate,
-      FileSystemBackendDelegate* mtp_delegate,
-      scoped_refptr<storage::ExternalMountPoints> mount_points,
-      storage::ExternalMountPoints* system_mount_points);
+  FileSystemBackend(FileSystemBackendDelegate* drive_delegate,

[Luis Héctor Chávez, 2016/10/25 17:15:47]

Can you clearly document (in code) what pointers will be owned by making them
std::unique_ptr<>?

[hashimoto, 2016/10/26 05:23:12]

Done.

+                    FileSystemBackendDelegate* file_system_provider_delegate,
+                    FileSystemBackendDelegate* mtp_delegate,
+                    FileSystemBackendDelegate* arc_content_delegate,
+                    scoped_refptr<storage::ExternalMountPoints> mount_points,
+                    storage::ExternalMountPoints* system_mount_points);
   ~FileSystemBackend() override;
 
   // Adds system mount points, such as "archive", and "removable". This
@@ -155,6 +155,9 @@ class FileSystemBackend : public storage::ExternalFileSystemBackend {
   // The delegate instance for the MTP file system related operations.
   std::unique_ptr<FileSystemBackendDelegate> mtp_delegate_;
 
+  // The delegate instance for the ARC content file system related operations.
+  std::unique_ptr<FileSystemBackendDelegate> arc_content_delegate_;
+
   // Mount points specific to the owning context (i.e. per-profile mount
   // points).
   //