Change the media::PowerLineFrequency from an enum class to a proper class

media/base/video_capture_types_unittest.cc

Index: media/base/video_capture_types_unittest.cc
diff --git a/media/base/video_capture_types_unittest.cc b/media/base/video_capture_types_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..1a9b977feab1b59e2a7b3466b74819848890f080
--- /dev/null
+++ b/media/base/video_capture_types_unittest.cc
@@ -0,0 +1,20 @@
+// 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 "video_capture_types.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace media {
+  TEST(PowerLineFrequency, setAndTest) {
+    PowerLineFrequency p;
+    EXPECT_EQ(p.get(), 0);
+    EXPECT_TRUE(p.valid());
+    p = PowerLineFrequency::FREQUENCY_50HZ;
+    EXPECT_EQ(p.get(), 50);
+    EXPECT_TRUE(p.valid());
+    p = PowerLineFrequency::FREQUENCY_60HZ;
+    EXPECT_EQ(p.get(), 60);
+    EXPECT_TRUE(p.valid());
+  }
+}