Add a method in DiskMountManager to refresh mount entries in addition to devices.

chromeos/disks/mock_disk_mount_manager.cc

Index: chromeos/disks/mock_disk_mount_manager.cc
diff --git a/chromeos/disks/mock_disk_mount_manager.cc b/chromeos/disks/mock_disk_mount_manager.cc
index c1665b71f1a5e943634b05662375fb3f388b7cac..a023b1a9fdcaabc104e216c01010f4ffdf0a5188 100644
--- a/chromeos/disks/mock_disk_mount_manager.cc
+++ b/chromeos/disks/mock_disk_mount_manager.cc
@@ -58,6 +58,9 @@ MockDiskMountManager::MockDiskMountManager() {
   ON_CALL(*this, FindDiskBySourcePath(_))
       .WillByDefault(Invoke(
           this, &MockDiskMountManager::FindDiskBySourcePathInternal));
+  ON_CALL(*this, EnsureMountInfoRefreshed(_))
+      .WillByDefault(Invoke(
+          this, &MockDiskMountManager::EnsureMountInfoRefreshedInternal));
 }
 
 MockDiskMountManager::~MockDiskMountManager() {
@@ -162,7 +165,7 @@ void MockDiskMountManager::SetupDefaultReplies() {
       .WillRepeatedly(ReturnRef(mount_points_));
   EXPECT_CALL(*this, FindDiskBySourcePath(_))
       .Times(AnyNumber());
-  EXPECT_CALL(*this, RequestMountInfoRefresh())
+  EXPECT_CALL(*this, EnsureMountInfoRefreshed(_))
       .Times(AnyNumber());
   EXPECT_CALL(*this, MountPath(_, _, _, _))
       .Times(AnyNumber());
@@ -234,6 +237,11 @@ MockDiskMountManager::FindDiskBySourcePathInternal(
   return disk_it == disks_.end() ? NULL : disk_it->second;
 }
 
+void MockDiskMountManager::EnsureMountInfoRefreshedInternal(
+    const EnsureMountInfoRefreshedCallback& callback) {
+  callback.Run(true);
+}
+
 void MockDiskMountManager::NotifyDiskChanged(
     DiskEvent event,
     const DiskMountManager::Disk* disk) {