Fix some GN component build issues.

components/device_event_log/device_event_log_export.h

Index: components/device_event_log/device_event_log_export.h
diff --git a/components/device_event_log/device_event_log_export.h b/components/device_event_log/device_event_log_export.h
deleted file mode 100644
index fda2016dbde95ab2638be1ba970ed4d9685afd51..0000000000000000000000000000000000000000
--- a/components/device_event_log/device_event_log_export.h
+++ /dev/null
@@ -1,29 +0,0 @@
-// 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.
-
-#ifndef COMPONENTS_DEVICE_EVENT_LOG_DEVICE_EVENT_LOG_EXPORT_H_
-#define COMPONENTS_DEVICE_EVENT_LOG_DEVICE_EVENT_LOG_EXPORT_H_
-
-#if defined(COMPONENT_BUILD)
-#if defined(WIN32)
-
-#if defined(DEVICE_EVENT_LOG_IMPLEMENTATION)
-#define DEVICE_EVENT_LOG_EXPORT __declspec(dllexport)
-#else
-#define DEVICE_EVENT_LOG_EXPORT __declspec(dllimport)
-#endif  // defined(DEVICE_EVENT_LOG_IMPLEMENTATION)
-
-#else  // defined(WIN32)
-#if defined(DEVICE_EVENT_LOG_IMPLEMENTATION)
-#define DEVICE_EVENT_LOG_EXPORT __attribute__((visibility("default")))
-#else
-#define DEVICE_EVENT_LOG_EXPORT
-#endif
-#endif
-
-#else  // defined(COMPONENT_BUILD)
-#define DEVICE_EVENT_LOG_EXPORT
-#endif
-
-#endif  // COMPONENTS_DEVICE_EVENT_LOG_DEVICE_EVENT_LOG_EXPORT_H_