Reland "Mandoline filesystem: Build the filesystem on windows."

components/filesystem/files_test_base.cc

Index: components/filesystem/files_test_base.cc
diff --git a/components/filesystem/files_test_base.cc b/components/filesystem/files_test_base.cc
index bca5ad899a25029c5581339175f666d72e751d4d..5bd477a124eb9c4cedaa580a405fa42b296f8c96 100644
--- a/components/filesystem/files_test_base.cc
+++ b/components/filesystem/files_test_base.cc
@@ -25,10 +25,10 @@ void FilesTestBase::SetUp() {
 }
 
 void FilesTestBase::GetTemporaryRoot(DirectoryPtr* directory) {
-  Error error = ERROR_FAILED;
+  FileError error = FILE_ERROR_FAILED;
   files()->OpenFileSystem("temp", GetProxy(directory), Capture(&error));
   ASSERT_TRUE(files().WaitForIncomingResponse());
-  ASSERT_EQ(ERROR_OK, error);
+  ASSERT_EQ(FILE_ERROR_OK, error);
 }
 
 }  // namespace filesystem