Add media file validation to utility process

media/base/media_file_checker_unittest.cc

Index: media/base/media_file_checker_unittest.cc
diff --git a/media/base/media_file_checker_unittest.cc b/media/base/media_file_checker_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..54decffd55f9f11db5bdc44194a3ee6d8e4901d0
--- /dev/null
+++ b/media/base/media_file_checker_unittest.cc
@@ -0,0 +1,48 @@
+// Copyright (c) 2012 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 "base/logging.h"
+#include "build/build_config.h"
+#include "media/base/media_file_checker.h"
+#include "media/base/test_data_util.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace media {
+
+static void RunMediaFileChecker(const std::string& filename, bool expectation) {
+  base::PlatformFileError error;
+  base::PlatformFile file = base::CreatePlatformFile(
+      GetTestDataFilePath(filename),
+      base::PLATFORM_FILE_OPEN | base::PLATFORM_FILE_READ,
+      NULL,
+      &error);
+  ASSERT_EQ(base::PLATFORM_FILE_OK, error);
+
+  MediaFileChecker checker(file);
+  const base::TimeDelta check_time = base::TimeDelta::FromMilliseconds(100);
+  bool result = checker.Start(check_time);
+  EXPECT_EQ(expectation, result);
+
+  base::ClosePlatformFile(file);
+}
+
+TEST(MediaFileCheckerTest, InvalidFile) {
+  RunMediaFileChecker("ten_byte_file", false);
+}
+
+TEST(MediaFileCheckerTest, Video) {
+  RunMediaFileChecker("bear.ogv", true);
+}
+
+TEST(MediaFileCheckerTest, Audio) {
+  RunMediaFileChecker("sfx.ogg", true);
+}
+
+#if defined(GOOGLE_CHROME_BUILD) || defined(USE_PROPRIETARY_CODECS)
+TEST(MediaFileCheckerTest, MP3) {
+  RunMediaFileChecker("sfx.mp3", true);
+}
+#endif
+
+}  // namespace media