Add Remount to SmbProviderClient

This change implements Remount on SmbProviderClient which calls Remount
on the SmbProvider Daemon via D-Bus.

Bug: 757625
Change-Id: I11b419863996e6bba685f14136e54d65db007d0a
Reviewed-on: https://chromium-review.googlesource.com/987199
Commit-Queue: Bailey Berro <baileyberro@chromium.org>
Reviewed-by: Zentaro Kavanagh <zentaro@chromium.org>
Cr-Commit-Position: refs/heads/master@{#548165}

chromeos/dbus/fake_smb_provider_client.cc

@@ -24,6 +24,13 @@ void FakeSmbProviderClient::Mount(const base::FilePath& share_path,
       FROM_HERE, base::BindOnce(std::move(callback), smbprovider::ERROR_OK, 1));
 }
 
+void FakeSmbProviderClient::Remount(const base::FilePath& share_path,
+                                    int32_t mount_id,
+                                    StatusCallback callback) {
+  base::ThreadTaskRunnerHandle::Get()->PostTask(
+      FROM_HERE, base::BindOnce(std::move(callback), smbprovider::ERROR_OK));
+}
+
 void FakeSmbProviderClient::Unmount(int32_t mount_id, StatusCallback callback) {
   base::ThreadTaskRunnerHandle::Get()->PostTask(
       FROM_HERE, base::BindOnce(std::move(callback), smbprovider::ERROR_OK));

chromeos/dbus/fake_smb_provider_client.h

@@ -20,6 +20,9 @@ class CHROMEOS_EXPORT FakeSmbProviderClient : public SmbProviderClient {
 
   // SmbProviderClient override.
   void Mount(const base::FilePath& share_path, MountCallback callback) override;
+  void Remount(const base::FilePath& share_path,
+               int32_t mount_id,
+               StatusCallback callback) override;
   void Unmount(int32_t mount_id, StatusCallback callback) override;
   void ReadDirectory(int32_t mount_id,
                      const base::FilePath& directory_path,

chromeos/dbus/smb_provider_client.cc

@@ -70,6 +70,15 @@ class SmbProviderClientImpl : public SmbProviderClient {
                &SmbProviderClientImpl::HandleMountCallback, &callback);
   }
 
+  void Remount(const base::FilePath& share_path,
+               int32_t mount_id,
+               StatusCallback callback) override {
+    smbprovider::RemountOptionsProto options;
+    options.set_path(share_path.value());
+    options.set_mount_id(mount_id);
+    CallDefaultMethod(smbprovider::kRemountMethod, options, &callback);
+  }
+
   void Unmount(int32_t mount_id, StatusCallback callback) override {
     smbprovider::UnmountOptionsProto options;
     options.set_mount_id(mount_id);

chromeos/dbus/smb_provider_client.h

@@ -53,6 +53,12 @@ class CHROMEOS_EXPORT SmbProviderClient
   virtual void Mount(const base::FilePath& share_path,
                      MountCallback callback) = 0;
 
+  // Calls Remount. This attempts to remount the share at |share_path| with its
+  // original |mount_id|.
+  virtual void Remount(const base::FilePath& share_path,
+                       int32_t mount_id,
+                       StatusCallback callback) = 0;
+
   // Calls Unmount. This removes the corresponding mount of |mount_id| from
   // the list of valid mounts. Subsequent operations on |mount_id| will fail.
   virtual void Unmount(int32_t mount_id, StatusCallback callback) = 0;