Add mojom module suffix in .mojom files for components/filesystem.

components/filesystem/file_impl_unittest.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stddef.h>
 #include <stdint.h>
 #include <utility>
 #include <vector>
 
 #include "base/files/file.h"
 #include "components/filesystem/files_test_base.h"
 #include "mojo/platform_handle/platform_handle_functions.h"
 #include "mojo/public/cpp/bindings/interface_request.h"
 #include "mojo/public/cpp/bindings/type_converter.h"
 #include "mojo/util/capture_util.h"
 
 using mojo::Capture;
 
 namespace filesystem {
 namespace {
 
 using FileImplTest = FilesTestBase;
 
 TEST_F(FileImplTest, CreateWriteCloseRenameOpenRead) {
-  DirectoryPtr directory;
+  mojom::DirectoryPtr directory;
   GetTemporaryRoot(&directory);
-  FileError error;
+  mojom::FileError error;
 
   {
     // Create my_file.
-    FilePtr file;
-    error = FileError::FAILED;
-    directory->OpenFile("my_file", GetProxy(&file), kFlagWrite | kFlagCreate,
+    mojom::FilePtr file;
+    error = mojom::FileError::FAILED;
+    directory->OpenFile("my_file", GetProxy(&file),
+                        mojom::kFlagWrite | mojom::kFlagCreate,
                         Capture(&error));
     ASSERT_TRUE(directory.WaitForIncomingResponse());
-    EXPECT_EQ(FileError::OK, error);
+    EXPECT_EQ(mojom::FileError::OK, error);
 
     // Write to it.
     std::vector<uint8_t> bytes_to_write;
     bytes_to_write.push_back(static_cast<uint8_t>('h'));
     bytes_to_write.push_back(static_cast<uint8_t>('e'));
     bytes_to_write.push_back(static_cast<uint8_t>('l'));
     bytes_to_write.push_back(static_cast<uint8_t>('l'));
     bytes_to_write.push_back(static_cast<uint8_t>('o'));
-    error = FileError::FAILED;
+    error = mojom::FileError::FAILED;
     uint32_t num_bytes_written = 0;
     file->Write(mojo::Array<uint8_t>::From(bytes_to_write), 0,
-                Whence::FROM_CURRENT, Capture(&error, &num_bytes_written));
+                mojom::Whence::FROM_CURRENT,
+                Capture(&error, &num_bytes_written));
     ASSERT_TRUE(file.WaitForIncomingResponse());
-    EXPECT_EQ(FileError::OK, error);
+    EXPECT_EQ(mojom::FileError::OK, error);
     EXPECT_EQ(bytes_to_write.size(), num_bytes_written);
 
     // Close it.
-    error = FileError::FAILED;
+    error = mojom::FileError::FAILED;
     file->Close(Capture(&error));
     ASSERT_TRUE(file.WaitForIncomingResponse());
-    EXPECT_EQ(FileError::OK, error);
+    EXPECT_EQ(mojom::FileError::OK, error);
   }
 
   // Rename it.
-  error = FileError::FAILED;
+  error = mojom::FileError::FAILED;
   directory->Rename("my_file", "your_file", Capture(&error));
   ASSERT_TRUE(directory.WaitForIncomingResponse());
-  EXPECT_EQ(FileError::OK, error);
+  EXPECT_EQ(mojom::FileError::OK, error);
 
   {
     // Open my_file again.
-    FilePtr file;
-    error = FileError::FAILED;
-    directory->OpenFile("your_file", GetProxy(&file), kFlagRead | kFlagOpen,
-                        Capture(&error));
+    mojom::FilePtr file;
+    error = mojom::FileError::FAILED;
+    directory->OpenFile("your_file", GetProxy(&file),
+                        mojom::kFlagRead | mojom::kFlagOpen, Capture(&error));
     ASSERT_TRUE(directory.WaitForIncomingResponse());
-    EXPECT_EQ(FileError::OK, error);
+    EXPECT_EQ(mojom::FileError::OK, error);
 
     // Read from it.
     mojo::Array<uint8_t> bytes_read;
-    error = FileError::FAILED;
-    file->Read(3, 1, Whence::FROM_BEGIN, Capture(&error, &bytes_read));
+    error = mojom::FileError::FAILED;
+    file->Read(3, 1, mojom::Whence::FROM_BEGIN, Capture(&error, &bytes_read));
     ASSERT_TRUE(file.WaitForIncomingResponse());
-    EXPECT_EQ(FileError::OK, error);
+    EXPECT_EQ(mojom::FileError::OK, error);
     ASSERT_EQ(3u, bytes_read.size());
     EXPECT_EQ(static_cast<uint8_t>('e'), bytes_read[0]);
     EXPECT_EQ(static_cast<uint8_t>('l'), bytes_read[1]);
     EXPECT_EQ(static_cast<uint8_t>('l'), bytes_read[2]);
   }
 
   // TODO(vtl): Test read/write offset options.
 }
 
 TEST_F(FileImplTest, CantWriteInReadMode) {
-  DirectoryPtr directory;
+  mojom::DirectoryPtr directory;
   GetTemporaryRoot(&directory);
-  FileError error;
+  mojom::FileError error;
 
   std::vector<uint8_t> bytes_to_write;
   bytes_to_write.push_back(static_cast<uint8_t>('h'));
   bytes_to_write.push_back(static_cast<uint8_t>('e'));
   bytes_to_write.push_back(static_cast<uint8_t>('l'));
   bytes_to_write.push_back(static_cast<uint8_t>('l'));
   bytes_to_write.push_back(static_cast<uint8_t>('o'));
 
   {
     // Create my_file.
-    FilePtr file;
-    error = FileError::FAILED;
-    directory->OpenFile("my_file", GetProxy(&file), kFlagWrite | kFlagCreate,
+    mojom::FilePtr file;
+    error = mojom::FileError::FAILED;
+    directory->OpenFile("my_file", GetProxy(&file),
+                        mojom::kFlagWrite | mojom::kFlagCreate,
                         Capture(&error));
     ASSERT_TRUE(directory.WaitForIncomingResponse());
-    EXPECT_EQ(FileError::OK, error);
+    EXPECT_EQ(mojom::FileError::OK, error);
 
     // Write to it.
-    error = FileError::FAILED;
+    error = mojom::FileError::FAILED;
     uint32_t num_bytes_written = 0;
     file->Write(mojo::Array<uint8_t>::From(bytes_to_write), 0,
-                Whence::FROM_CURRENT, Capture(&error, &num_bytes_written));
+                mojom::Whence::FROM_CURRENT,
+                Capture(&error, &num_bytes_written));
     ASSERT_TRUE(file.WaitForIncomingResponse());
-    EXPECT_EQ(FileError::OK, error);
+    EXPECT_EQ(mojom::FileError::OK, error);
     EXPECT_EQ(bytes_to_write.size(), num_bytes_written);
 
     // Close it.
-    error = FileError::FAILED;
+    error = mojom::FileError::FAILED;
     file->Close(Capture(&error));
     ASSERT_TRUE(file.WaitForIncomingResponse());
-    EXPECT_EQ(FileError::OK, error);
+    EXPECT_EQ(mojom::FileError::OK, error);
   }
 
   {
     // Open my_file again, this time with read only mode.
-    FilePtr file;
-    error = FileError::FAILED;
-    directory->OpenFile("my_file", GetProxy(&file), kFlagRead | kFlagOpen,
-                        Capture(&error));
+    mojom::FilePtr file;
+    error = mojom::FileError::FAILED;
+    directory->OpenFile("my_file", GetProxy(&file),
+                        mojom::kFlagRead | mojom::kFlagOpen, Capture(&error));
     ASSERT_TRUE(directory.WaitForIncomingResponse());
-    EXPECT_EQ(FileError::OK, error);
+    EXPECT_EQ(mojom::FileError::OK, error);
 
     // Try to write in read mode; it should fail.
-    error = FileError::OK;
+    error = mojom::FileError::OK;
     uint32_t num_bytes_written = 0;
     file->Write(mojo::Array<uint8_t>::From(bytes_to_write), 0,
-                Whence::FROM_CURRENT, Capture(&error, &num_bytes_written));
+                mojom::Whence::FROM_CURRENT,
+                Capture(&error, &num_bytes_written));
 
     ASSERT_TRUE(file.WaitForIncomingResponse());
-    EXPECT_EQ(FileError::FAILED, error);
+    EXPECT_EQ(mojom::FileError::FAILED, error);
     EXPECT_EQ(0u, num_bytes_written);
 
     // Close it.
-    error = FileError::FAILED;
+    error = mojom::FileError::FAILED;
     file->Close(Capture(&error));
     ASSERT_TRUE(file.WaitForIncomingResponse());
-    EXPECT_EQ(FileError::OK, error);
+    EXPECT_EQ(mojom::FileError::OK, error);
   }
 }
 
 TEST_F(FileImplTest, OpenInAppendMode) {
-  DirectoryPtr directory;
+  mojom::DirectoryPtr directory;
   GetTemporaryRoot(&directory);
-  FileError error;
+  mojom::FileError error;
 
   {
     // Create my_file.
-    FilePtr file;
-    error = FileError::FAILED;
-    directory->OpenFile("my_file", GetProxy(&file), kFlagWrite | kFlagCreate,
+    mojom::FilePtr file;
+    error = mojom::FileError::FAILED;
+    directory->OpenFile("my_file", GetProxy(&file),
+                        mojom::kFlagWrite | mojom::kFlagCreate,
                         Capture(&error));
     ASSERT_TRUE(directory.WaitForIncomingResponse());
-    EXPECT_EQ(FileError::OK, error);
+    EXPECT_EQ(mojom::FileError::OK, error);
 
     // Write to it.
     std::vector<uint8_t> bytes_to_write;
     bytes_to_write.push_back(static_cast<uint8_t>('h'));
     bytes_to_write.push_back(static_cast<uint8_t>('e'));
     bytes_to_write.push_back(static_cast<uint8_t>('l'));
     bytes_to_write.push_back(static_cast<uint8_t>('l'));
     bytes_to_write.push_back(static_cast<uint8_t>('o'));
-    error = FileError::FAILED;
+    error = mojom::FileError::FAILED;
     uint32_t num_bytes_written = 0;
     file->Write(mojo::Array<uint8_t>::From(bytes_to_write), 0,
-                Whence::FROM_CURRENT, Capture(&error, &num_bytes_written));
+                mojom::Whence::FROM_CURRENT,
+                Capture(&error, &num_bytes_written));
     ASSERT_TRUE(file.WaitForIncomingResponse());
-    EXPECT_EQ(FileError::OK, error);
+    EXPECT_EQ(mojom::FileError::OK, error);
     EXPECT_EQ(bytes_to_write.size(), num_bytes_written);
 
     // Close it.
-    error = FileError::FAILED;
+    error = mojom::FileError::FAILED;
     file->Close(Capture(&error));
     ASSERT_TRUE(file.WaitForIncomingResponse());
-    EXPECT_EQ(FileError::OK, error);
+    EXPECT_EQ(mojom::FileError::OK, error);
   }
 
   {
     // Append to my_file.
-    FilePtr file;
-    error = FileError::FAILED;
-    directory->OpenFile("my_file", GetProxy(&file), kFlagAppend | kFlagOpen,
-                        Capture(&error));
+    mojom::FilePtr file;
+    error = mojom::FileError::FAILED;
+    directory->OpenFile("my_file", GetProxy(&file),
+                        mojom::kFlagAppend | mojom::kFlagOpen, Capture(&error));
     ASSERT_TRUE(directory.WaitForIncomingResponse());
-    EXPECT_EQ(FileError::OK, error);
+    EXPECT_EQ(mojom::FileError::OK, error);
 
     // Write to it.
     std::vector<uint8_t> bytes_to_write;
     bytes_to_write.push_back(static_cast<uint8_t>('g'));
     bytes_to_write.push_back(static_cast<uint8_t>('o'));
     bytes_to_write.push_back(static_cast<uint8_t>('o'));
     bytes_to_write.push_back(static_cast<uint8_t>('d'));
     bytes_to_write.push_back(static_cast<uint8_t>('b'));
     bytes_to_write.push_back(static_cast<uint8_t>('y'));
     bytes_to_write.push_back(static_cast<uint8_t>('e'));
-    error = FileError::FAILED;
+    error = mojom::FileError::FAILED;
     uint32_t num_bytes_written = 0;
     file->Write(mojo::Array<uint8_t>::From(bytes_to_write), 0,
-                Whence::FROM_CURRENT, Capture(&error, &num_bytes_written));
+                mojom::Whence::FROM_CURRENT,
+                Capture(&error, &num_bytes_written));
     ASSERT_TRUE(file.WaitForIncomingResponse());
-    EXPECT_EQ(FileError::OK, error);
+    EXPECT_EQ(mojom::FileError::OK, error);
     EXPECT_EQ(bytes_to_write.size(), num_bytes_written);
 
     // Close it.
-    error = FileError::FAILED;
+    error = mojom::FileError::FAILED;
     file->Close(Capture(&error));
     ASSERT_TRUE(file.WaitForIncomingResponse());
-    EXPECT_EQ(FileError::OK, error);
+    EXPECT_EQ(mojom::FileError::OK, error);
   }
 
   {
     // Open my_file again.
-    FilePtr file;
-    error = FileError::FAILED;
-    directory->OpenFile("my_file", GetProxy(&file), kFlagRead | kFlagOpen,
-                        Capture(&error));
+    mojom::FilePtr file;
+    error = mojom::FileError::FAILED;
+    directory->OpenFile("my_file", GetProxy(&file),
+                        mojom::kFlagRead | mojom::kFlagOpen, Capture(&error));
     ASSERT_TRUE(directory.WaitForIncomingResponse());
-    EXPECT_EQ(FileError::OK, error);
+    EXPECT_EQ(mojom::FileError::OK, error);
 
     // Read from it.
     mojo::Array<uint8_t> bytes_read;
-    error = FileError::FAILED;
-    file->Read(12, 0, Whence::FROM_BEGIN, Capture(&error, &bytes_read));
+    error = mojom::FileError::FAILED;
+    file->Read(12, 0, mojom::Whence::FROM_BEGIN, Capture(&error, &bytes_read));
     ASSERT_TRUE(file.WaitForIncomingResponse());
-    EXPECT_EQ(FileError::OK, error);
+    EXPECT_EQ(mojom::FileError::OK, error);
     ASSERT_EQ(12u, bytes_read.size());
     EXPECT_EQ(static_cast<uint8_t>('l'), bytes_read[3]);
     EXPECT_EQ(static_cast<uint8_t>('o'), bytes_read[4]);
     EXPECT_EQ(static_cast<uint8_t>('g'), bytes_read[5]);
     EXPECT_EQ(static_cast<uint8_t>('o'), bytes_read[6]);
   }
 }
 
 TEST_F(FileImplTest, OpenInTruncateMode) {
-  DirectoryPtr directory;
+  mojom::DirectoryPtr directory;
   GetTemporaryRoot(&directory);
-  FileError error;
+  mojom::FileError error;
 
   {
     // Create my_file.
-    FilePtr file;
-    error = FileError::FAILED;
-    directory->OpenFile("my_file", GetProxy(&file), kFlagWrite | kFlagCreate,
+    mojom::FilePtr file;
+    error = mojom::FileError::FAILED;
+    directory->OpenFile("my_file", GetProxy(&file),
+                        mojom::kFlagWrite | mojom::kFlagCreate,
                         Capture(&error));
     ASSERT_TRUE(directory.WaitForIncomingResponse());
-    EXPECT_EQ(FileError::OK, error);
+    EXPECT_EQ(mojom::FileError::OK, error);
 
     // Write to it.
     std::vector<uint8_t> bytes_to_write;
     bytes_to_write.push_back(static_cast<uint8_t>('h'));
     bytes_to_write.push_back(static_cast<uint8_t>('e'));
     bytes_to_write.push_back(static_cast<uint8_t>('l'));
     bytes_to_write.push_back(static_cast<uint8_t>('l'));
     bytes_to_write.push_back(static_cast<uint8_t>('o'));
-    error = FileError::FAILED;
+    error = mojom::FileError::FAILED;
     uint32_t num_bytes_written = 0;
     file->Write(mojo::Array<uint8_t>::From(bytes_to_write), 0,
-                Whence::FROM_CURRENT, Capture(&error, &num_bytes_written));
+                mojom::Whence::FROM_CURRENT,
+                Capture(&error, &num_bytes_written));
     ASSERT_TRUE(file.WaitForIncomingResponse());
-    EXPECT_EQ(FileError::OK, error);
+    EXPECT_EQ(mojom::FileError::OK, error);
     EXPECT_EQ(bytes_to_write.size(), num_bytes_written);
 
     // Close it.
-    error = FileError::FAILED;
+    error = mojom::FileError::FAILED;
     file->Close(Capture(&error));
     ASSERT_TRUE(file.WaitForIncomingResponse());
-    EXPECT_EQ(FileError::OK, error);
+    EXPECT_EQ(mojom::FileError::OK, error);
   }
 
   {
     // Append to my_file.
-    FilePtr file;
-    error = FileError::FAILED;
+    mojom::FilePtr file;
+    error = mojom::FileError::FAILED;
     directory->OpenFile("my_file", GetProxy(&file),
-                        kFlagWrite | kFlagOpenTruncated, Capture(&error));
+                        mojom::kFlagWrite | mojom::kFlagOpenTruncated,
+                        Capture(&error));
     ASSERT_TRUE(directory.WaitForIncomingResponse());
-    EXPECT_EQ(FileError::OK, error);
+    EXPECT_EQ(mojom::FileError::OK, error);
 
     // Write to it.
     std::vector<uint8_t> bytes_to_write;
     bytes_to_write.push_back(static_cast<uint8_t>('g'));
     bytes_to_write.push_back(static_cast<uint8_t>('o'));
     bytes_to_write.push_back(static_cast<uint8_t>('o'));
     bytes_to_write.push_back(static_cast<uint8_t>('d'));
     bytes_to_write.push_back(static_cast<uint8_t>('b'));
     bytes_to_write.push_back(static_cast<uint8_t>('y'));
     bytes_to_write.push_back(static_cast<uint8_t>('e'));
-    error = FileError::FAILED;
+    error = mojom::FileError::FAILED;
     uint32_t num_bytes_written = 0;
     file->Write(mojo::Array<uint8_t>::From(bytes_to_write), 0,
-                Whence::FROM_CURRENT, Capture(&error, &num_bytes_written));
+                mojom::Whence::FROM_CURRENT,
+                Capture(&error, &num_bytes_written));
     ASSERT_TRUE(file.WaitForIncomingResponse());
-    EXPECT_EQ(FileError::OK, error);
+    EXPECT_EQ(mojom::FileError::OK, error);
     EXPECT_EQ(bytes_to_write.size(), num_bytes_written);
 
     // Close it.
-    error = FileError::FAILED;
+    error = mojom::FileError::FAILED;
     file->Close(Capture(&error));
     ASSERT_TRUE(file.WaitForIncomingResponse());
-    EXPECT_EQ(FileError::OK, error);
+    EXPECT_EQ(mojom::FileError::OK, error);
   }
 
   {
     // Open my_file again.
-    FilePtr file;
-    error = FileError::FAILED;
-    directory->OpenFile("my_file", GetProxy(&file), kFlagRead | kFlagOpen,
-                        Capture(&error));
+    mojom::FilePtr file;
+    error = mojom::FileError::FAILED;
+    directory->OpenFile("my_file", GetProxy(&file),
+                        mojom::kFlagRead | mojom::kFlagOpen, Capture(&error));
     ASSERT_TRUE(directory.WaitForIncomingResponse());
-    EXPECT_EQ(FileError::OK, error);
+    EXPECT_EQ(mojom::FileError::OK, error);
 
     // Read from it.
     mojo::Array<uint8_t> bytes_read;
-    error = FileError::FAILED;
-    file->Read(7, 0, Whence::FROM_BEGIN, Capture(&error, &bytes_read));
+    error = mojom::FileError::FAILED;
+    file->Read(7, 0, mojom::Whence::FROM_BEGIN, Capture(&error, &bytes_read));
     ASSERT_TRUE(file.WaitForIncomingResponse());
-    EXPECT_EQ(FileError::OK, error);
+    EXPECT_EQ(mojom::FileError::OK, error);
     ASSERT_EQ(7u, bytes_read.size());
     EXPECT_EQ(static_cast<uint8_t>('g'), bytes_read[0]);
     EXPECT_EQ(static_cast<uint8_t>('o'), bytes_read[1]);
     EXPECT_EQ(static_cast<uint8_t>('o'), bytes_read[2]);
     EXPECT_EQ(static_cast<uint8_t>('d'), bytes_read[3]);
   }
 }
 
 // Note: Ignore nanoseconds, since it may not always be supported. We expect at
 // least second-resolution support though.
 TEST_F(FileImplTest, StatTouch) {
-  DirectoryPtr directory;
+  mojom::DirectoryPtr directory;
   GetTemporaryRoot(&directory);
-  FileError error;
+  mojom::FileError error;
 
   // Create my_file.
-  FilePtr file;
-  error = FileError::FAILED;
-  directory->OpenFile("my_file", GetProxy(&file), kFlagWrite | kFlagCreate,
-                      Capture(&error));
+  mojom::FilePtr file;
+  error = mojom::FileError::FAILED;
+  directory->OpenFile("my_file", GetProxy(&file),
+                      mojom::kFlagWrite | mojom::kFlagCreate, Capture(&error));
   ASSERT_TRUE(directory.WaitForIncomingResponse());
-  EXPECT_EQ(FileError::OK, error);
+  EXPECT_EQ(mojom::FileError::OK, error);
 
   // Stat it.
-  error = FileError::FAILED;
-  FileInformationPtr file_info;
+  error = mojom::FileError::FAILED;
+  mojom::FileInformationPtr file_info;
   file->Stat(Capture(&error, &file_info));
   ASSERT_TRUE(file.WaitForIncomingResponse());
-  EXPECT_EQ(FileError::OK, error);
+  EXPECT_EQ(mojom::FileError::OK, error);
   ASSERT_FALSE(file_info.is_null());
-  EXPECT_EQ(FsFileType::REGULAR_FILE, file_info->type);
+  EXPECT_EQ(mojom::FsFileType::REGULAR_FILE, file_info->type);
   EXPECT_EQ(0, file_info->size);
   EXPECT_GT(file_info->atime, 0);  // Expect that it's not 1970-01-01.
   EXPECT_GT(file_info->mtime, 0);
   double first_mtime = file_info->mtime;
 
   // Touch only the atime.
-  error = FileError::FAILED;
-  TimespecOrNowPtr t(TimespecOrNow::New());
+  error = mojom::FileError::FAILED;
+  mojom::TimespecOrNowPtr t(mojom::TimespecOrNow::New());
   t->now = false;
   const int64_t kPartyTime1 = 1234567890;  // Party like it's 2009-02-13.
   t->seconds = kPartyTime1;
   file->Touch(std::move(t), nullptr, Capture(&error));
   ASSERT_TRUE(file.WaitForIncomingResponse());
-  EXPECT_EQ(FileError::OK, error);
+  EXPECT_EQ(mojom::FileError::OK, error);
 
   // Stat again.
-  error = FileError::FAILED;
+  error = mojom::FileError::FAILED;
   file_info.reset();
   file->Stat(Capture(&error, &file_info));
   ASSERT_TRUE(file.WaitForIncomingResponse());
-  EXPECT_EQ(FileError::OK, error);
+  EXPECT_EQ(mojom::FileError::OK, error);
   ASSERT_FALSE(file_info.is_null());
   EXPECT_EQ(kPartyTime1, file_info->atime);
   EXPECT_EQ(first_mtime, file_info->mtime);
 
   // Touch only the mtime.
-  t = TimespecOrNow::New();
+  t = mojom::TimespecOrNow::New();
   t->now = false;
   const int64_t kPartyTime2 = 1425059525;  // No time like the present.
   t->seconds = kPartyTime2;
   file->Touch(nullptr, std::move(t), Capture(&error));
   ASSERT_TRUE(file.WaitForIncomingResponse());
-  EXPECT_EQ(FileError::OK, error);
+  EXPECT_EQ(mojom::FileError::OK, error);
 
   // Stat again.
-  error = FileError::FAILED;
+  error = mojom::FileError::FAILED;
   file_info.reset();
   file->Stat(Capture(&error, &file_info));
   ASSERT_TRUE(file.WaitForIncomingResponse());
-  EXPECT_EQ(FileError::OK, error);
+  EXPECT_EQ(mojom::FileError::OK, error);
   ASSERT_FALSE(file_info.is_null());
   EXPECT_EQ(kPartyTime1, file_info->atime);
   EXPECT_EQ(kPartyTime2, file_info->mtime);
 
   // TODO(vtl): Also test non-zero file size.
   // TODO(vtl): Also test Touch() "now" options.
   // TODO(vtl): Also test touching both atime and mtime.
 }
 
 TEST_F(FileImplTest, TellSeek) {
-  DirectoryPtr directory;
+  mojom::DirectoryPtr directory;
   GetTemporaryRoot(&directory);
-  FileError error;
+  mojom::FileError error;
 
   // Create my_file.
-  FilePtr file;
-  error = FileError::FAILED;
-  directory->OpenFile("my_file", GetProxy(&file), kFlagWrite | kFlagCreate,
-                      Capture(&error));
+  mojom::FilePtr file;
+  error = mojom::FileError::FAILED;
+  directory->OpenFile("my_file", GetProxy(&file),
+                      mojom::kFlagWrite | mojom::kFlagCreate, Capture(&error));
   ASSERT_TRUE(directory.WaitForIncomingResponse());
-  EXPECT_EQ(FileError::OK, error);
+  EXPECT_EQ(mojom::FileError::OK, error);
 
   // Write to it.
   std::vector<uint8_t> bytes_to_write(1000, '!');
-  error = FileError::FAILED;
+  error = mojom::FileError::FAILED;
   uint32_t num_bytes_written = 0;
   file->Write(mojo::Array<uint8_t>::From(bytes_to_write), 0,
-              Whence::FROM_CURRENT, Capture(&error, &num_bytes_written));
+              mojom::Whence::FROM_CURRENT, Capture(&error, &num_bytes_written));
   ASSERT_TRUE(file.WaitForIncomingResponse());
-  EXPECT_EQ(FileError::OK, error);
+  EXPECT_EQ(mojom::FileError::OK, error);
   EXPECT_EQ(bytes_to_write.size(), num_bytes_written);
   const int size = static_cast<int>(num_bytes_written);
 
   // Tell.
-  error = FileError::FAILED;
+  error = mojom::FileError::FAILED;
   int64_t position = -1;
   file->Tell(Capture(&error, &position));
   ASSERT_TRUE(file.WaitForIncomingResponse());
   // Should be at the end.
-  EXPECT_EQ(FileError::OK, error);
+  EXPECT_EQ(mojom::FileError::OK, error);
   EXPECT_EQ(size, position);
 
   // Seek back 100.
-  error = FileError::FAILED;
+  error = mojom::FileError::FAILED;
   position = -1;
-  file->Seek(-100, Whence::FROM_CURRENT, Capture(&error, &position));
+  file->Seek(-100, mojom::Whence::FROM_CURRENT, Capture(&error, &position));
   ASSERT_TRUE(file.WaitForIncomingResponse());
-  EXPECT_EQ(FileError::OK, error);
+  EXPECT_EQ(mojom::FileError::OK, error);
   EXPECT_EQ(size - 100, position);
 
   // Tell.
-  error = FileError::FAILED;
+  error = mojom::FileError::FAILED;
   position = -1;
   file->Tell(Capture(&error, &position));
   ASSERT_TRUE(file.WaitForIncomingResponse());
-  EXPECT_EQ(FileError::OK, error);
+  EXPECT_EQ(mojom::FileError::OK, error);
   EXPECT_EQ(size - 100, position);
 
   // Seek to 123 from start.
-  error = FileError::FAILED;
+  error = mojom::FileError::FAILED;
   position = -1;
-  file->Seek(123, Whence::FROM_BEGIN, Capture(&error, &position));
+  file->Seek(123, mojom::Whence::FROM_BEGIN, Capture(&error, &position));
   ASSERT_TRUE(file.WaitForIncomingResponse());
-  EXPECT_EQ(FileError::OK, error);
+  EXPECT_EQ(mojom::FileError::OK, error);
   EXPECT_EQ(123, position);
 
   // Tell.
-  error = FileError::FAILED;
+  error = mojom::FileError::FAILED;
   position = -1;
   file->Tell(Capture(&error, &position));
   ASSERT_TRUE(file.WaitForIncomingResponse());
-  EXPECT_EQ(FileError::OK, error);
+  EXPECT_EQ(mojom::FileError::OK, error);
   EXPECT_EQ(123, position);
 
   // Seek to 123 back from end.
-  error = FileError::FAILED;
+  error = mojom::FileError::FAILED;
   position = -1;
-  file->Seek(-123, Whence::FROM_END, Capture(&error, &position));
+  file->Seek(-123, mojom::Whence::FROM_END, Capture(&error, &position));
   ASSERT_TRUE(file.WaitForIncomingResponse());
-  EXPECT_EQ(FileError::OK, error);
+  EXPECT_EQ(mojom::FileError::OK, error);
   EXPECT_EQ(size - 123, position);
 
   // Tell.
-  error = FileError::FAILED;
+  error = mojom::FileError::FAILED;
   position = -1;
   file->Tell(Capture(&error, &position));
   ASSERT_TRUE(file.WaitForIncomingResponse());
-  EXPECT_EQ(FileError::OK, error);
+  EXPECT_EQ(mojom::FileError::OK, error);
   EXPECT_EQ(size - 123, position);
 
   // TODO(vtl): Check that seeking actually affects reading/writing.
   // TODO(vtl): Check that seeking can extend the file?
 }
 
 TEST_F(FileImplTest, Dup) {
-  DirectoryPtr directory;
+  mojom::DirectoryPtr directory;
   GetTemporaryRoot(&directory);
-  FileError error;
+  mojom::FileError error;
 
   // Create my_file.
-  FilePtr file1;
-  error = FileError::FAILED;
+  mojom::FilePtr file1;
+  error = mojom::FileError::FAILED;
   directory->OpenFile("my_file", GetProxy(&file1),
-                      kFlagRead | kFlagWrite | kFlagCreate, Capture(&error));
+                      mojom::kFlagRead | mojom::kFlagWrite | mojom::kFlagCreate,
+                      Capture(&error));
   ASSERT_TRUE(directory.WaitForIncomingResponse());
-  EXPECT_EQ(FileError::OK, error);
+  EXPECT_EQ(mojom::FileError::OK, error);
 
   // Write to it.
   std::vector<uint8_t> bytes_to_write;
   bytes_to_write.push_back(static_cast<uint8_t>('h'));
   bytes_to_write.push_back(static_cast<uint8_t>('e'));
   bytes_to_write.push_back(static_cast<uint8_t>('l'));
   bytes_to_write.push_back(static_cast<uint8_t>('l'));
   bytes_to_write.push_back(static_cast<uint8_t>('o'));
-  error = FileError::FAILED;
+  error = mojom::FileError::FAILED;
   uint32_t num_bytes_written = 0;
   file1->Write(mojo::Array<uint8_t>::From(bytes_to_write), 0,
-               Whence::FROM_CURRENT, Capture(&error, &num_bytes_written));
+               mojom::Whence::FROM_CURRENT,
+               Capture(&error, &num_bytes_written));
   ASSERT_TRUE(file1.WaitForIncomingResponse());
-  EXPECT_EQ(FileError::OK, error);
+  EXPECT_EQ(mojom::FileError::OK, error);
   EXPECT_EQ(bytes_to_write.size(), num_bytes_written);
   const int end_hello_pos = static_cast<int>(num_bytes_written);
 
   // Dup it.
-  FilePtr file2;
-  error = FileError::FAILED;
+  mojom::FilePtr file2;
+  error = mojom::FileError::FAILED;
   file1->Dup(GetProxy(&file2), Capture(&error));
   ASSERT_TRUE(file1.WaitForIncomingResponse());
-  EXPECT_EQ(FileError::OK, error);
+  EXPECT_EQ(mojom::FileError::OK, error);
 
   // |file2| should have the same position.
-  error = FileError::FAILED;
+  error = mojom::FileError::FAILED;
   int64_t position = -1;
   file2->Tell(Capture(&error, &position));
   ASSERT_TRUE(file2.WaitForIncomingResponse());
-  EXPECT_EQ(FileError::OK, error);
+  EXPECT_EQ(mojom::FileError::OK, error);
   EXPECT_EQ(end_hello_pos, position);
 
   // Write using |file2|.
   std::vector<uint8_t> more_bytes_to_write;
   more_bytes_to_write.push_back(static_cast<uint8_t>('w'));
   more_bytes_to_write.push_back(static_cast<uint8_t>('o'));
   more_bytes_to_write.push_back(static_cast<uint8_t>('r'));
   more_bytes_to_write.push_back(static_cast<uint8_t>('l'));
   more_bytes_to_write.push_back(static_cast<uint8_t>('d'));
-  error = FileError::FAILED;
+  error = mojom::FileError::FAILED;
   num_bytes_written = 0;
   file2->Write(mojo::Array<uint8_t>::From(more_bytes_to_write), 0,
-               Whence::FROM_CURRENT, Capture(&error, &num_bytes_written));
+               mojom::Whence::FROM_CURRENT,
+               Capture(&error, &num_bytes_written));
   ASSERT_TRUE(file2.WaitForIncomingResponse());
-  EXPECT_EQ(FileError::OK, error);
+  EXPECT_EQ(mojom::FileError::OK, error);
   EXPECT_EQ(more_bytes_to_write.size(), num_bytes_written);
   const int end_world_pos = end_hello_pos + static_cast<int>(num_bytes_written);
 
   // |file1| should have the same position.
-  error = FileError::FAILED;
+  error = mojom::FileError::FAILED;
   position = -1;
   file1->Tell(Capture(&error, &position));
   ASSERT_TRUE(file1.WaitForIncomingResponse());
-  EXPECT_EQ(FileError::OK, error);
+  EXPECT_EQ(mojom::FileError::OK, error);
   EXPECT_EQ(end_world_pos, position);
 
   // Close |file1|.
-  error = FileError::FAILED;
+  error = mojom::FileError::FAILED;
   file1->Close(Capture(&error));
   ASSERT_TRUE(file1.WaitForIncomingResponse());
-  EXPECT_EQ(FileError::OK, error);
+  EXPECT_EQ(mojom::FileError::OK, error);
 
   // Read everything using |file2|.
   mojo::Array<uint8_t> bytes_read;
-  error = FileError::FAILED;
-  file2->Read(1000, 0, Whence::FROM_BEGIN, Capture(&error, &bytes_read));
+  error = mojom::FileError::FAILED;
+  file2->Read(1000, 0, mojom::Whence::FROM_BEGIN, Capture(&error, &bytes_read));
   ASSERT_TRUE(file2.WaitForIncomingResponse());
-  EXPECT_EQ(FileError::OK, error);
+  EXPECT_EQ(mojom::FileError::OK, error);
   ASSERT_EQ(static_cast<size_t>(end_world_pos), bytes_read.size());
   // Just check the first and last bytes.
   EXPECT_EQ(static_cast<uint8_t>('h'), bytes_read[0]);
   EXPECT_EQ(static_cast<uint8_t>('d'), bytes_read[end_world_pos - 1]);
 
   // TODO(vtl): Test that |file2| has the same open options as |file1|.
 }
 
 TEST_F(FileImplTest, Truncate) {
   const uint32_t kInitialSize = 1000;
   const uint32_t kTruncatedSize = 654;
 
-  DirectoryPtr directory;
+  mojom::DirectoryPtr directory;
   GetTemporaryRoot(&directory);
-  FileError error;
+  mojom::FileError error;
 
   // Create my_file.
-  FilePtr file;
-  error = FileError::FAILED;
-  directory->OpenFile("my_file", GetProxy(&file), kFlagWrite | kFlagCreate,
-                      Capture(&error));
+  mojom::FilePtr file;
+  error = mojom::FileError::FAILED;
+  directory->OpenFile("my_file", GetProxy(&file),
+                      mojom::kFlagWrite | mojom::kFlagCreate, Capture(&error));
   ASSERT_TRUE(directory.WaitForIncomingResponse());
-  EXPECT_EQ(FileError::OK, error);
+  EXPECT_EQ(mojom::FileError::OK, error);
 
   // Write to it.
   std::vector<uint8_t> bytes_to_write(kInitialSize, '!');
-  error = FileError::FAILED;
+  error = mojom::FileError::FAILED;
   uint32_t num_bytes_written = 0;
   file->Write(mojo::Array<uint8_t>::From(bytes_to_write), 0,
-              Whence::FROM_CURRENT, Capture(&error, &num_bytes_written));
+              mojom::Whence::FROM_CURRENT, Capture(&error, &num_bytes_written));
   ASSERT_TRUE(file.WaitForIncomingResponse());
-  EXPECT_EQ(FileError::OK, error);
+  EXPECT_EQ(mojom::FileError::OK, error);
   EXPECT_EQ(kInitialSize, num_bytes_written);
 
   // Stat it.
-  error = FileError::FAILED;
-  FileInformationPtr file_info;
+  error = mojom::FileError::FAILED;
+  mojom::FileInformationPtr file_info;
   file->Stat(Capture(&error, &file_info));
   ASSERT_TRUE(file.WaitForIncomingResponse());
-  EXPECT_EQ(FileError::OK, error);
+  EXPECT_EQ(mojom::FileError::OK, error);
   ASSERT_FALSE(file_info.is_null());
   EXPECT_EQ(kInitialSize, file_info->size);
 
   // Truncate it.
-  error = FileError::FAILED;
+  error = mojom::FileError::FAILED;
   file->Truncate(kTruncatedSize, Capture(&error));
   ASSERT_TRUE(file.WaitForIncomingResponse());
-  EXPECT_EQ(FileError::OK, error);
+  EXPECT_EQ(mojom::FileError::OK, error);
 
   // Stat again.
-  error = FileError::FAILED;
+  error = mojom::FileError::FAILED;
   file_info.reset();
   file->Stat(Capture(&error, &file_info));
   ASSERT_TRUE(file.WaitForIncomingResponse());
-  EXPECT_EQ(FileError::OK, error);
+  EXPECT_EQ(mojom::FileError::OK, error);
   ASSERT_FALSE(file_info.is_null());
   EXPECT_EQ(kTruncatedSize, file_info->size);
 }
 
 TEST_F(FileImplTest, AsHandle) {
-  DirectoryPtr directory;
+  mojom::DirectoryPtr directory;
   GetTemporaryRoot(&directory);
-  FileError error;
+  mojom::FileError error;
 
   {
     // Create my_file.
-    FilePtr file1;
-    error = FileError::FAILED;
-    directory->OpenFile("my_file", GetProxy(&file1),
-                        kFlagRead | kFlagWrite | kFlagCreate, Capture(&error));
+    mojom::FilePtr file1;
+    error = mojom::FileError::FAILED;
+    directory->OpenFile(
+        "my_file", GetProxy(&file1),
+        mojom::kFlagRead | mojom::kFlagWrite | mojom::kFlagCreate,
+        Capture(&error));
     ASSERT_TRUE(directory.WaitForIncomingResponse());
-    EXPECT_EQ(FileError::OK, error);
+    EXPECT_EQ(mojom::FileError::OK, error);
 
     // Fetch the handle
-    error = FileError::FAILED;
+    error = mojom::FileError::FAILED;
     mojo::ScopedHandle handle;
     file1->AsHandle(Capture(&error, &handle));
     ASSERT_TRUE(file1.WaitForIncomingResponse());
-    EXPECT_EQ(FileError::OK, error);
+    EXPECT_EQ(mojom::FileError::OK, error);
 
     // Pull a file descriptor out of the scoped handle.
     MojoPlatformHandle platform_handle;
     MojoResult extract_result =
         MojoExtractPlatformHandle(handle.release().value(), &platform_handle);
     EXPECT_EQ(MOJO_RESULT_OK, extract_result);
 
     // Pass this raw file descriptor to a base::File.
     base::File raw_file(platform_handle);
     ASSERT_TRUE(raw_file.IsValid());
     EXPECT_EQ(5, raw_file.WriteAtCurrentPos("hello", 5));
   }
 
   {
     // Reopen my_file.
-    FilePtr file2;
-    error = FileError::FAILED;
-    directory->OpenFile("my_file", GetProxy(&file2), kFlagRead | kFlagOpen,
-                        Capture(&error));
+    mojom::FilePtr file2;
+    error = mojom::FileError::FAILED;
+    directory->OpenFile("my_file", GetProxy(&file2),
+                        mojom::kFlagRead | mojom::kFlagOpen, Capture(&error));
     ASSERT_TRUE(directory.WaitForIncomingResponse());
-    EXPECT_EQ(FileError::OK, error);
+    EXPECT_EQ(mojom::FileError::OK, error);
 
     // Verify that we wrote data raw on the file descriptor.
     mojo::Array<uint8_t> bytes_read;
-    error = FileError::FAILED;
-    file2->Read(5, 0, Whence::FROM_BEGIN, Capture(&error, &bytes_read));
+    error = mojom::FileError::FAILED;
+    file2->Read(5, 0, mojom::Whence::FROM_BEGIN, Capture(&error, &bytes_read));
     ASSERT_TRUE(file2.WaitForIncomingResponse());
-    EXPECT_EQ(FileError::OK, error);
+    EXPECT_EQ(mojom::FileError::OK, error);
     ASSERT_EQ(5u, bytes_read.size());
     EXPECT_EQ(static_cast<uint8_t>('h'), bytes_read[0]);
     EXPECT_EQ(static_cast<uint8_t>('e'), bytes_read[1]);
     EXPECT_EQ(static_cast<uint8_t>('l'), bytes_read[2]);
     EXPECT_EQ(static_cast<uint8_t>('l'), bytes_read[3]);
     EXPECT_EQ(static_cast<uint8_t>('o'), bytes_read[4]);
   }
 }
 
 TEST_F(FileImplTest, SimpleLockUnlock) {
-  DirectoryPtr directory;
+  mojom::DirectoryPtr directory;
   GetTemporaryRoot(&directory);
-  FileError error;
+  mojom::FileError error;
 
   // Create my_file.
-  FilePtr file;
-  error = FileError::FAILED;
+  mojom::FilePtr file;
+  error = mojom::FileError::FAILED;
   directory->OpenFile("my_file", GetProxy(&file),
-                      kFlagRead | kFlagWrite | kFlagCreate, Capture(&error));
+                      mojom::kFlagRead | mojom::kFlagWrite | mojom::kFlagCreate,
+                      Capture(&error));
   ASSERT_TRUE(directory.WaitForIncomingResponse());
-  EXPECT_EQ(FileError::OK, error);
+  EXPECT_EQ(mojom::FileError::OK, error);
 
   // Lock the file.
-  error = FileError::FAILED;
+  error = mojom::FileError::FAILED;
   file->Lock(Capture(&error));
   ASSERT_TRUE(file.WaitForIncomingResponse());
-  EXPECT_EQ(FileError::OK, error);
+  EXPECT_EQ(mojom::FileError::OK, error);
 
   // Unlock the file.
-  error = FileError::FAILED;
+  error = mojom::FileError::FAILED;
   file->Unlock(Capture(&error));
   ASSERT_TRUE(file.WaitForIncomingResponse());
-  EXPECT_EQ(FileError::OK, error);
+  EXPECT_EQ(mojom::FileError::OK, error);
 }
 
 TEST_F(FileImplTest, CantDoubleLock) {
-  DirectoryPtr directory;
+  mojom::DirectoryPtr directory;
   GetTemporaryRoot(&directory);
-  FileError error;
+  mojom::FileError error;
 
   // Create my_file.
-  FilePtr file;
-  error = FileError::FAILED;
+  mojom::FilePtr file;
+  error = mojom::FileError::FAILED;
   directory->OpenFile("my_file", GetProxy(&file),
-                      kFlagRead | kFlagWrite | kFlagCreate, Capture(&error));
+                      mojom::kFlagRead | mojom::kFlagWrite | mojom::kFlagCreate,
+                      Capture(&error));
   ASSERT_TRUE(directory.WaitForIncomingResponse());
-  EXPECT_EQ(FileError::OK, error);
+  EXPECT_EQ(mojom::FileError::OK, error);
 
   // Lock the file.
-  error = FileError::FAILED;
+  error = mojom::FileError::FAILED;
   file->Lock(Capture(&error));
   ASSERT_TRUE(file.WaitForIncomingResponse());
-  EXPECT_EQ(FileError::OK, error);
+  EXPECT_EQ(mojom::FileError::OK, error);
 
   // Lock the file again.
-  error = FileError::OK;
+  error = mojom::FileError::OK;
   file->Lock(Capture(&error));
   ASSERT_TRUE(file.WaitForIncomingResponse());
-  EXPECT_EQ(FileError::FAILED, error);
+  EXPECT_EQ(mojom::FileError::FAILED, error);
 }
 
 TEST_F(FileImplTest, ClosingFileClearsLock) {
-  DirectoryPtr directory;
+  mojom::DirectoryPtr directory;
   GetTemporaryRoot(&directory);
-  FileError error;
+  mojom::FileError error;
 
   {
     // Create my_file.
-    FilePtr file;
-    error = FileError::FAILED;
-    directory->OpenFile("my_file", GetProxy(&file),
-                        kFlagRead | kFlagWrite | kFlagOpenAlways,
-                        Capture(&error));
+    mojom::FilePtr file;
+    error = mojom::FileError::FAILED;
+    directory->OpenFile(
+        "my_file", GetProxy(&file),
+        mojom::kFlagRead | mojom::kFlagWrite | mojom::kFlagOpenAlways,
+        Capture(&error));
     ASSERT_TRUE(directory.WaitForIncomingResponse());
-    EXPECT_EQ(FileError::OK, error);
+    EXPECT_EQ(mojom::FileError::OK, error);
 
     // Lock the file.
-    error = FileError::FAILED;
+    error = mojom::FileError::FAILED;
     file->Lock(Capture(&error));
     ASSERT_TRUE(file.WaitForIncomingResponse());
-    EXPECT_EQ(FileError::OK, error);
+    EXPECT_EQ(mojom::FileError::OK, error);
   }
 
   {
     // Open the file again.
-    FilePtr file;
-    error = FileError::FAILED;
-    directory->OpenFile("my_file", GetProxy(&file),
-                        kFlagRead | kFlagWrite | kFlagOpenAlways,
-                        Capture(&error));
+    mojom::FilePtr file;
+    error = mojom::FileError::FAILED;
+    directory->OpenFile(
+        "my_file", GetProxy(&file),
+        mojom::kFlagRead | mojom::kFlagWrite | mojom::kFlagOpenAlways,
+        Capture(&error));
     ASSERT_TRUE(directory.WaitForIncomingResponse());
-    EXPECT_EQ(FileError::OK, error);
+    EXPECT_EQ(mojom::FileError::OK, error);
 
     // The file shouldn't be locked (and we check by trying to lock it).
-    error = FileError::FAILED;
+    error = mojom::FileError::FAILED;
     file->Lock(Capture(&error));
     ASSERT_TRUE(file.WaitForIncomingResponse());
-    EXPECT_EQ(FileError::OK, error);
+    EXPECT_EQ(mojom::FileError::OK, error);
   }
 }
 
 }  // namespace
 }  // namespace filesystem